Storage battery with high safety performance and lithium battery module

Abstract

The utility model provides a storage battery with high safety performance and a lithium battery module. The storage battery with high safety performance comprises a bottom plate and a plurality of battery packs, the plurality of battery packs are stacked, each battery pack comprises a box body, a battery monomer, a positive electrode connecting module, a negative electrode connecting module and a covering piece, the battery monomer is mounted in the box body, and the positive electrode connecting module is mounted in the box body. The positive electrode connecting module is installed in the box body and connected with the battery monomers, the negative electrode connecting module is installed in the box body and connected with the battery monomers, the covering part is detachably connected with the box body, and the covering part covers the positive electrode connecting module and the negative electrode connecting module; the first positive electrode connector and the second positive electrode connector between every two adjacent battery packs are connected through a wire, and the first negative electrode connector and the second negative electrode connector between every two adjacent battery packs are connected through a wire, so that the plurality of battery packs are arranged in parallel.

Description

Technical Field

[0001] The present disclosure relates to the field of battery modules, and particularly to a storage battery and a lithium battery module with high safety performance. Background Art

[0002] With the increasingly tense situation of world energy and environmental protection, batteries, as power sources, are becoming more and more popular. Due to its high energy density, small size, light weight, environmental protection and pollution-free, and no memory effect, lithium-ion batteries have gradually become the first choice for power sources. Since the voltage of a single lithium-ion battery is relatively low, battery packs are generally combined in parallel, and then multiple battery packs are connected together to increase the capacity of the battery pack.

[0003] In traditional technologies, the connecting plates are connected to the positive and negative electrodes of multiple battery packs by screwing, so that multiple battery packs are connected in parallel. However, for energy storage devices that require assembling multiple battery packs, the operation convenience of the screwing method is poor, which is not conducive to the rapid increase or decrease of battery packs; on the other hand, structures such as screws and connecting plates are generally arranged on the outside of the device, and it is easy for operators to touch them by mistake, posing a certain safety risk.

[0004] Therefore, there is an urgent need for a battery device that is convenient for the rapid increase or decrease of battery packs and has high safety performance. Summary of the Utility Model

[0005] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a storage battery and a lithium battery module with high safety performance that are convenient for the rapid increase or decrease of battery packs and have high safety performance.

[0006] The purpose of the present disclosure is achieved by the following technical solutions:

[0007] A storage battery with high safety performance includes:

[0008] A bottom plate and multiple battery packs, the multiple battery packs are stacked, and the battery pack at the bottom is embedded in the bottom plate.

[0009] Each battery pack includes a box body, battery cells, a positive connection module, a negative connection module, and a covering member. The battery cells are installed in the box body, the positive connection module is installed on the box body and is electrically connected to the positive electrode of the battery cells, the negative connection module is installed on the box body and is electrically connected to the negative electrode of the battery cells, the covering member is detachably connected to the box body, and the covering member covers the positive connection module and the negative connection module; and,

[0010] The positive electrode connection module includes a first positive electrode connector and a second positive electrode connector which are arranged adjacent to each other. The negative electrode connection module includes a first negative electrode connector and a second negative electrode connector which are arranged adjacent to each other. The first positive electrode connector and the second positive electrode connector between two adjacent battery packs are connected by a wire, and the first negative electrode connector and the second negative electrode connector between two adjacent battery packs are connected by a wire, so that a plurality of the battery packs are arranged in parallel.

[0011] In one embodiment, the first positive electrode connector is provided with a first connection hole, and the box body is provided with a second connection hole. The first connection hole and the second connection hole are for a screw to pass through; and / or,

[0012] The first negative electrode connector is provided with a third connection hole, and the box body is provided with a fourth connection hole. The third connection hole and the fourth connection hole are for a screw to pass through.

[0013] In one embodiment, the battery pack further includes a power display module. The power display module is installed on the box body and connected to the battery cell. The power display module is located between the positive electrode connection module and the negative electrode connection module.

[0014] In one embodiment, the box body is provided with a mounting groove. The positive electrode connection module and the negative electrode connection module are both located in the mounting groove. The covering member is located in the mounting groove and connected to the box body, so that the covering member covers the positive electrode connection module and the negative electrode connection module.

[0015] In one embodiment, the covering member is provided with an embedding groove. The positive electrode connection module and the negative electrode connection module are located in the embedding groove, so that the covering member covers the positive electrode connection module and the negative electrode connection module.

[0016] In one embodiment, the covering member is provided with a first screwing hole, and the box body is provided with a second screwing hole. The first screwing hole and the second screwing hole are for a screw to pass through, so that the box body and the covering member are screwed together.

[0017] In one embodiment, the side surface of the box body is flush with the covering member.

[0018] In one embodiment, the box body is provided with a clamping groove. The covering member is partially located in the clamping groove, so that the covering member is clamped with the box body.

[0019] In one embodiment, the covering member is a plastic covering member.

[0020] A lithium battery module includes the high-safety-performance storage battery described in any one of the above.

[0021] Compared with the prior art, the present disclosure has at least the following advantages:

[0022] For the above-mentioned storage battery with high safety performance, a first positive connection head, a second positive connection head, a first negative connection head and a second negative connection head are provided on the battery box. The first positive connection heads of adjacent two battery packs are connected to the second positive connection heads through wires, and the first negative connection heads of adjacent two battery packs are connected to the second negative connection heads through wires. In this way, multiple battery packs are connected in parallel. Compared with the traditional connection method of screwing, the structural design of the present application is more convenient for adding or reducing battery packs; on the other hand, a covering member is provided on the battery box, and the covering member covers the positive connection module and the negative connection module, thus avoiding accidental contact with the positive connection module or the negative connection module and improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present disclosure, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is a schematic structural diagram of a storage battery with high safety performance according to an embodiment;

[0025] Figure 2 is Figure 1 Another schematic structural diagram of the storage battery with high safety performance shown. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present disclosure are shown in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure content of the present disclosure more thorough and comprehensive.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only embodiments.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this disclosure pertains. The terms used in the description of this disclosure herein are for the purpose of describing specific embodiments only and are not intended to limit this disclosure. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0029] The present disclosure provides a storage battery with high safety performance, including a bottom plate and a plurality of battery packs. The plurality of battery packs are stacked, and the battery pack located at the bottom is embedded in the bottom plate. Each battery pack includes a box body, battery cells, a positive connection module, a negative connection module, and a covering member. The battery cells are installed in the box body. The positive connection module is installed on the box body and is electrically connected to the positive electrode of the battery cells. The negative connection module is installed on the box body and is electrically connected to the negative electrode of the battery cells. The covering member is detachably connected to the box body, and the covering member covers the positive connection module and the negative connection module. The positive connection module includes a first positive connection head and a second positive connection head arranged adjacent to each other. The negative connection module includes a first negative connection head and a second negative connection head arranged adjacent to each other. The first positive connection head and the second positive connection head between two adjacent battery packs are connected by a wire, and the first negative connection head and the second negative connection head between two adjacent battery packs are connected by a wire, so that the plurality of battery packs are connected in parallel.

[0030] For the above storage battery with high safety performance, the box body is provided with a first positive connection head, a second positive connection head, a first negative connection head, and a second negative connection head. The first positive connection head of two adjacent battery packs is connected to the second positive connection head by a wire, and the first negative connection head of two adjacent battery packs is connected to the second negative connection head by a wire. In this way, the plurality of battery packs are connected in parallel. Compared with the traditional connection method of screwing, the structural design of this application is more convenient for adding or reducing battery packs. On the other hand, the box body is provided with a covering member, and the covering member covers the positive connection module and the negative connection module, thus avoiding accidental contact with the positive connection module or the negative connection module and improving the safety performance.

[0031] To better understand the technical solutions and beneficial effects of the present disclosure, the following further elaborates on the present disclosure with specific embodiments:

[0032] As Figure 1 and Figure 2As shown, a high - safety - performance battery 10 of an embodiment includes a bottom plate 100 and a plurality of battery packs 200. The plurality of battery packs 200 are stacked, and the battery pack 200 at the bottom is embedded in the bottom plate 100. Each battery pack 200 includes a box body 210, battery cells (not shown in the figure), a positive - pole connection module 220, a negative - pole connection module 230, and a covering member 240. The battery cells are installed in the box body 210. The positive - pole connection module 220 is installed on the box body 210 and is electrically connected to the positive pole of the battery cells. The negative - pole connection module 230 is installed on the box body 210 and is electrically connected to the negative pole of the battery cells. The covering member 240 is detachably connected to the box body 210, and the covering member 240 covers the positive - pole connection module 220 and the negative - pole connection module 230.

[0033] Further, the positive - pole connection module 220 includes a first positive - pole connection head 221 and a second positive - pole connection head 222 arranged adjacent to each other. The negative - pole connection module 230 includes a first negative - pole connection head 231 and a second negative - pole connection head 232 arranged adjacent to each other. The first positive - pole connection head 221 and the second positive - pole connection head 222 between two adjacent battery packs 200 are connected by a wire. The first negative - pole connection head 231 and the second negative - pole connection head 232 between two adjacent battery packs 200 are connected by a wire, so that the plurality of battery packs 200 are connected in parallel.

[0034] In this embodiment, a plurality of battery packs 200 are stacked on the bottom plate 100. The positive - pole connection modules 220 of two adjacent battery packs 200 are correspondingly connected, and the negative - pole connection modules 230 are correspondingly connected, so that the plurality of battery packs 200 are connected in parallel. For example, the number of battery packs 200 is 3. The first positive - pole connection head 221 of the bottom battery pack 200 is connected to the second positive - pole connection head 222 of the middle battery pack 200 by a wire. The first positive - pole connection head 221 of the middle battery pack 200 is connected to the second positive - pole connection head 221 of the top battery pack 200. Similarly, the negative - pole connection heads of the 3 battery packs 200 are arranged in the same way as the positive - pole connection heads to realize the electrical connection of the 3 battery packs 200. Thus, through the structural design of the first positive - pole connection head 221, the second positive - pole connection head 222, the first negative - pole connection head 231, and the second negative - pole connection head 232, the number of battery packs 200 can be quickly increased or decreased. Further, after each battery pack 200 is assembled, the covering member 240 is covered on the positive - pole connection module 220 and the negative - pole connection module 230 to prevent the user from accidentally touching the positive - pole connection module 220 or the negative - pole connection module 230, and at the same time, it also has the effects of waterproofing and dust - proofing.

[0035] The above-mentioned high-safety storage battery 10 has a first positive connection head 221, a second positive connection head 222, a first negative connection head 231, and a second negative connection head 232 on the box body 210. The first positive connection heads 221 of two adjacent battery packs 200 are connected to the second positive connection heads 222 through wires, and the first negative connection heads 231 of two adjacent battery packs 200 are connected to the second negative connection heads 232 through wires. In this way, multiple battery packs 200 are connected in parallel. Compared with the traditional connection method of locking screws, the structural design of this application is more convenient for adding or reducing battery packs 200; on the other hand, a covering member 240 is provided on the box body 210, and the covering member 240 covers the positive connection module 220 and the negative connection module 230, thus avoiding accidental contact with the positive connection module 220 or the negative connection module 230 and improving the safety performance.

[0036] In one embodiment, the first positive connection head 221 is provided with a first connection hole (not shown in the figure), and the box body 210 is provided with a second connection hole (not shown in the figure). The first connection hole and the second connection hole are used for screws to pass through. In this embodiment, the first positive connection head 221 is fixed to the box body 210 by screws and is connected to the battery cell inside the box body 210. Similarly, the second positive connection head 222 is also fixed to the box body 210 by screws.

[0037] In one embodiment, the first negative connection head 231 is provided with a third connection hole (not shown in the figure), and the box body 210 is provided with a fourth connection hole (not shown in the figure). The third connection hole and the fourth connection hole are used for screws to pass through. In this embodiment, the first negative connection head 231 is fixed to the box body 210 by screws and is connected to the battery cell inside the box body 210. Similarly, the second negative connection head 232 is also fixed to the box body 210 by screws.

[0038] As Figure 2 shown, in one embodiment, the battery pack 200 further includes a power display module 250. The power display module 250 is installed on the box body 210 and is connected to the battery cell. Specifically, the input end of the power display module 250 is electrically connected to the BMS power collection end of the battery cell, and the power display module 250 is located between the positive connection module 220 and the negative connection module 230. It can be understood that the power display module 250 is installed on the box body 210, and the power display module 250 is used to display the power of the battery. The power display module 250 is located between the positive connection module 220 and the negative connection module 230 to separate the positive connection module 220 and the negative connection module 230 to prevent the positive connection module 220 and the negative connection module 230 from being inserted in the wrong way when the wires are plugged in.

[0039] As Figure 2As shown, in one embodiment, the box body 210 is provided with an installation groove 211. Both the positive connection module 220 and the negative connection module 230 are located in the installation groove 211. The covering member 240 is located in the installation groove 211 and is connected to the box body 210, so that the covering member 240 covers the positive connection module 220 and the negative connection module 230. In this embodiment, the positive connection module 220 and the negative connection module 230 are located in the installation groove 211 inside the box body 210. The covering member 240 is also located in the installation groove 211 and is connected to the box body 210, and the covering member 240 is located above the surfaces of the positive connection module 220 and the negative connection module 230. In this way, the covering member 240 covers the positive connection module 220 and the negative connection module 230.

[0040] In one embodiment, the covering member 240 is provided with an embedding groove (not shown in the figure). The positive connection module 220 and the negative connection module 230 are located in the embedding groove, so that the covering member 240 covers the positive connection module 220 and the negative connection module 230. In this embodiment, the box body 210 is not provided with a groove. The positive connection module 220 and the negative connection module 230 are installed on the surface of the box body 210. The covering member 240 is provided with an embedding groove, and the positive connection module 220 and the negative connection module 230 are located in the embedding groove. In this way, the covering member 240 covers the positive connection module 220 and the negative connection module 230.

[0041] As Figure 1 and Figure 2 As shown, in one embodiment, the covering member 240 is provided with a first screw hole 241, and the box body 210 is provided with a second screw hole 212. The first screw hole 241 and the second screw hole 212 are used for screws to pass through, so that the box body 210 is screwed to the covering member 240. In this embodiment, the covering member 240 is fixed to the box body 210 by screws to achieve quick disassembly and assembly of the covering member 240.

[0042] In one embodiment, the side surface of the box body 210 is flush with the covering member 240. In this embodiment, the box body 210 is provided with an installation groove 211. The covering member 240 is located in the installation groove 211 and is connected to the box body 210, so that the side surface of the box body 210 is flush with the covering member 240, and further makes the overall structure of the storage battery flat.

[0043] In one embodiment, the box body 210 is provided with a clamping groove (not shown in the figure), and a part of the covering member 240 is located in the clamping groove, so that the covering member 240 is clamped with the box body 210. In this embodiment, the covering member 240 is clamped with the box body 210 through the clamping groove of the box body 210 to fix the covering member 240 to the box body 210 and make the disassembly and assembly of the covering member 240 more convenient.

[0044] In one embodiment, the covering member 240 is a plastic covering member 240. In this embodiment, the covering member 240 is made of plastic material to achieve an insulating effect.

[0045] The present application also provides a lithium battery module, including the high-safety performance storage battery 10 described in any one of the above.

[0046] Compared with the prior art, the present disclosure has at least the following advantages:

[0047] For the above-mentioned high-safety performance storage battery 10, the box body 210 is provided with a first positive connection head 221, a second positive connection head 222, a first negative connection head 231 and a second negative connection head 232. The first positive connection heads 221 of two adjacent battery packs 200 are connected to the second positive connection heads 222 through wires, and the first negative connection heads 231 of two adjacent battery packs 200 are connected to the second negative connection heads 232 through wires. In this way, multiple battery packs 200 are connected in parallel. Compared with the traditional connection method of locking screws, the structural design of the present application is more convenient for the addition and subtraction settings of the battery packs 200; on the other hand, the box body 210 is provided with a covering member 240, and the covering member 240 covers the positive connection module 220 and the negative connection module 230, thus avoiding accidental contact with the positive connection module 220 or the negative connection module 230 and improving the safety performance.

[0048] The above embodiments only represent several implementation manners of the present disclosure, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present disclosure, several deformations and improvements can still be made, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent shall be subject to the appended claims.

Claims

1. A high-safety storage battery, comprising a base plate and a plurality of battery packs, wherein the plurality of battery packs are stacked and the battery pack at the bottom is embedded in the base plate, characterized in that: Each of the battery packs comprises a box, a battery cell, a positive connection module, a negative connection module and a cover, wherein the battery cell is installed in the box, the positive connection module is installed in the box and electrically connected to the positive electrode of the battery cell, the negative connection module is installed in the box and electrically connected to the negative electrode of the battery cell, the cover is detachably connected to the box, and the cover covers the positive connection module and the negative connection module; and, The positive electrode connection module includes a first positive electrode connection head and a second positive electrode connection head arranged adjacent to each other, and the negative electrode connection module includes a first negative electrode connection head and a second negative electrode connection head arranged adjacent to each other. The first positive electrode connection head and the second positive electrode connection head between two adjacent battery groups are connected by a wire, and the first negative electrode connection head and the second negative electrode connection head between two adjacent battery groups are connected by a wire, so that the multiple battery groups are arranged in parallel.

2. The high safety performance storage battery according to claim 1, characterized in that: The first positive electrode connector is provided with a first connection hole, the box body is provided with a second connection hole, and the first connection hole and the second connection hole are used for screws to pass through; and / or, The first negative electrode connector is provided with a third connection hole, and the box body is provided with a fourth connection hole. The third connection hole and the fourth connection hole are used for screws to pass through.

3. The high safety performance storage battery according to claim 1, characterized in that: The battery pack further includes a power display module, which is installed in the box and connected to the battery cell, and is located between the positive electrode connection module and the negative electrode connection module.

4. The high safety performance storage battery according to claim 1, characterized in that: The box body is provided with an installation groove, the positive electrode connection module and the negative electrode connection module are both located in the installation groove, the covering member is located in the installation groove and connected to the box body, so that the covering member covers the positive electrode connection module and the negative electrode connection module.

5. The high safety performance storage battery according to claim 1, characterized in that: The cover member is provided with an embedding groove, and the positive electrode connection module and the negative electrode connection module are located in the embedding groove, so that the cover member covers the positive electrode connection module and the negative electrode connection module.

6. The high safety performance storage battery according to claim 1, characterized in that: The cover is provided with a first screw hole, and the box is provided with a second screw hole. The first screw hole and the second screw hole are used for screws to pass through, so that the box is screwed to the cover.

7. The high safety performance storage battery according to claim 6, characterized in that: The side surface of the box body is flush with the covering member.

8. The high safety performance storage battery according to claim 1, characterized in that: The box body is provided with a clamping groove, and the covering member is partially located in the clamping groove so that the covering member is clamped with the box body.

9. The high safety performance storage battery according to claim 1, characterized in that: The covering piece is a plastic covering piece.

10. A lithium battery module, characterized in that: A storage battery with high safety performance comprising any one of claims 1 to 9.

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