Integrated battery holder with fire suppression module

Abstract

The utility model discloses a kind of integrated battery support with fire extinguishing module, including integrated battery support, the fixed position of module positive and negative busbar is equipped on integrated battery support, several fire extinguishing holes, fire extinguishing module is installed in fire extinguishing hole;Fire extinguishing module includes fire extinguishing groove, fire extinguishing powder packet is equipped in fire extinguishing groove, the top cover of fire extinguishing groove is equipped with module upper cover, heat-sensitive wire is connected on fire extinguishing powder packet, the bottom of fire extinguishing groove is equipped with several gas injection holes.The utility model has the beneficial effect that: the fixed position of module positive and negative busbar is equipped, module structure is simplified and module cost is reduced, BMS module can be installed on module upper side;When cell thermal runaway, fire-extinguishing gas will be injected, and the temperature of thermal runaway is detected by heat-sensitive wire to automatically trigger fire extinguishing module to start, and the reaction is rapid.

Description

Technical Field

[0001] This utility model relates to the field of battery module structure, and in particular to an integrated battery bracket with a fire extinguishing module. Background Technology

[0002] Currently, most square lithium-ion battery modules consist of several modules, including cells, end plates, steel strips, busbars, data acquisition harnesses, positive and negative terminals, and a BMS. For the structure of square battery modules, plastic brackets are typically provided for fixing the busbars and harnesses. The plastic brackets for square battery modules on the market vary depending on the arrangement of the cells. Firstly, square battery modules on the market usually have positive and negative terminal sub-modules on the end plates for leading out the positive and negative busbars of the module. Secondly, if a single cell in a square battery module experiences thermal runaway and catches fire, and the fire is not extinguished in time, it will spread to other cells, eventually causing the entire battery module to catch fire. Utility Model Content

[0003] The purpose of this invention is to provide an integrated battery holder with a fire extinguishing module in order to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions: An integrated battery bracket with a fire extinguishing module includes an integrated battery bracket, the top surface of which is provided with several sets of series grooves, the bottom of which is provided with series holes, and a series busbar is provided in the series groove. The two ends of the integrated battery bracket are respectively provided with a negative busbar positioning area and a positive busbar positioning area. A negative busbar and a positive busbar are respectively installed on the negative busbar positioning area and the positive busbar positioning area. The integrated battery bracket is provided with several fire extinguishing holes, and a fire extinguishing module is installed in the fire extinguishing holes. The fire extinguishing module includes a fire extinguishing tank, which contains a fire extinguishing powder pack. The top of the fire extinguishing tank is covered with a module cover. A heat-sensitive wire is connected to the fire extinguishing powder pack. Several gas injection holes are provided at the bottom of the fire extinguishing tank.

[0005] Furthermore, a moisture-proof paper is placed between the fire extinguishing powder pack and the bottom wall of the fire extinguishing tank, and a wire outlet hole is provided on the side wall of the fire extinguishing tank.

[0006] Furthermore, the module cover has a snap-fit ​​hole on its side, and the fire extinguishing tank has a snap-fit ​​hole on its outer top, with the snap-fit ​​hole fastened inside the snap-fit ​​hole.

[0007] Furthermore, the side wall of the series groove is provided with a busbar fixing buckle, and the series busbar is clamped below the busbar fixing buckle.

[0008] Furthermore, both the negative busbar positioning area and the positive busbar positioning area are provided with busbar surrounds on their sides.

[0009] Furthermore, the integrated battery bracket is provided with at least two sets of BMS fixing screw posts.

[0010] Furthermore, several battery cells are located at the bottom of the integrated battery bracket, and each battery cell is equipped with a battery explosion-proof valve.

[0011] Furthermore, battery end plates are attached to both sides of several of the battery cells by steel strips.

[0012] Furthermore, several of the fire extinguishing holes are located in the center of the integrated battery bracket.

[0013] Furthermore, several of the aforementioned cells are connected in series via a series bus.

[0014] The beneficial effects of this utility model include, but are not limited to: 1) It has fixed positions for the positive and negative busbars of the module, which simplifies the module structure and reduces the module cost. It also has BMS module mounting screw posts, which can be used to install the BMS module bracket on top of the module.

[0015] 2) Equipped with a fire extinguishing module, which will spray a large amount of fire extinguishing gas when the battery cell experiences thermal runaway, thereby extinguishing the fire in the battery cell.

[0016] 3) The fire suppression module is automatically activated by detecting the thermal runaway temperature through a thermal wire, ensuring timely fire suppression and rapid response.

[0017] 4) The fire extinguishing module is equipped with moisture-proof paper to prevent the fire extinguishing module from becoming damp and thus failing. Attached Figure Description

[0018] Figure 1 This is a structural diagram of an integrated battery holder with a fire extinguishing module as described in this utility model; Figure 2 This utility model describes an integrated battery holder structure with a fire extinguishing module. Figure 1 ; Figure 3 This utility model describes an integrated battery holder structure with a fire extinguishing module. Figure 2 ; Figure 4 This is an enlarged view of area A of the integrated battery bracket with fire extinguishing module described in this utility model; Figure 5 This is a cell structure diagram of an integrated battery holder with a fire extinguishing module as described in this utility model.

[0019] The annotations in the attached figures are explained as follows: 1. Integrated battery bracket; 2. Battery cell; 21. Battery explosion-proof valve; 22. Electrode; 221. Positive electrode; 222. Negative electrode; 3. Battery end plate; 4. Steel strip; 5. Fire extinguishing module; 51. Module cover; 511. Fastening fitting; 52. Fire extinguishing pack; 53. Thermal wire; 54. Moisture-proof paper; 551. Hole fastener; 56. Fire extinguishing slot; 561. Wire outlet hole; 57. Gas injection hole; 6. Negative busbar positioning area; 61. Negative busbar; 7. Positive busbar positioning area; 71. Positive busbar; 8. Busbar surround; 9. Series connection hole; 10. Busbar fixing clip; 11. Fire extinguishing hole; 12. BMS fixing screw post; 13. Series busbar; 14. Series connection slot. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments.

[0021] The following is combined with Figures 1 to 5 The integrated battery bracket with fire extinguishing module provided in this embodiment will be further described as follows: Specific reference Figure 1 The present invention provides an integrated battery bracket with a fire extinguishing module, including an integrated battery bracket 1. The top surface of the integrated battery bracket 1 is provided with several sets of series grooves 14, the bottom of the series grooves 14 is provided with series holes 9, and a series busbar 13 is provided in the series grooves 14. Each series groove 14 is provided with two series holes 9. Several battery cells (2) are provided at the bottom of the integrated battery bracket (1). The bottom of the series busbar 13 is connected to the electrode 22 of the battery cell 2, thereby realizing the series connection of the battery cells; or, several battery cells 2 are connected in series through the series busbar 13.

[0022] Understandably, there are several series busbars 13, and the electrodes 22 include positive electrodes 221 and negative electrodes 222. In order to realize the series connection of the cells, in two adjacent cells, the positive electrode 221 of one cell and the negative electrode 222 of the other cell are connected to the same series busbar 13 (by welding or other connection methods), thereby realizing the series connection of the two cells.

[0023] Understandably, the two series holes 9 can reserve space for the connection (such as welding or other connection methods) between the series bus 13 and the positive electrode 221 and negative electrode 222 of the cell 2.

[0024] The integrated battery bracket 1 has a negative busbar positioning area 6 and a positive busbar positioning area 7 at its two ends. A negative busbar 61 and a positive busbar 71 are respectively installed on the negative busbar positioning area 6 and the positive busbar positioning area 7. The negative busbar 61 and the positive busbar 71 are fixed to the negative busbar positioning area 6 and the positive busbar positioning area 7 respectively by screws. The negative busbar 61 is connected to the negative electrode of the rightmost cell 2 (by welding or other connection method), and the positive busbar 71 is connected to the positive electrode of the leftmost cell 2 (by welding or other connection method). This structure saves the positive and negative terminal components on the square lithium battery module, simplifies the module structure and reduces the module cost.

[0025] The integrated battery bracket 1 has several fire extinguishing holes 11. In one embodiment, the fire extinguishing holes 11 are located in the center of the integrated battery bracket 1. A fire extinguishing module 5 is installed inside the fire extinguishing hole 11. The fire extinguishing module 5 includes a fire extinguishing tank 56, and a fire extinguishing powder pack 52 is provided inside the fire extinguishing tank 56. A module cover 51 is provided on the top of the fire extinguishing tank 56. A thermal wire 53 is connected to the fire extinguishing powder pack 52. The wire of the thermal wire 53 extends to the outside of the fire extinguishing tank 56. Several gas injection holes 57 are provided at the bottom of the fire extinguishing tank 56. When the thermal wire 53 reaches a certain temperature, it will activate and ignite the fire extinguishing powder pack 52 inside, and spray a large amount of fire extinguishing gas from the gas injection holes 57, thereby extinguishing the fire in the battery cell 2 and preventing the spread of thermal runaway.

[0026] like Figure 1 - Figure 5 As shown, embodiments of this utility model also disclose the following more optimized specific structures: A moisture-proof paper 54 is placed between the fire extinguishing powder pack 52 and the bottom wall of the fire extinguishing tank 56 to prevent the inside from getting damp. A wire outlet hole 561 is provided on the side wall of the fire extinguishing tank 56 to allow the thermal wire 53 to be led out.

[0027] The module cover 51 has a snap-fit ​​hole 511 (female snap-fit) on its side, and the bottom groove shell 55 has a snap-fit ​​hole 551 (male snap-fit) on its outer top. The snap-fit ​​hole 551 is fastened in the snap-fit ​​hole 511 to realize the installation of the module cover 51.

[0028] The side wall of the series groove 14 is provided with a busbar fixing buckle 10, and the series busbar 13 is fixed below the busbar fixing buckle 10.

[0029] Both the negative busbar positioning area 6 and the positive busbar positioning area 7 are provided with busbar surrounds 8 on their sides to prevent the busbar from coming into contact with external metal and causing a short circuit.

[0030] The integrated battery bracket 1 is equipped with at least two sets of BMS fixing screw posts 12 for fixing the BMS module.

[0031] In this utility model, it is understood that the full English name of BMS is Battery Management System, and the corresponding full Chinese name is Battery Management System; BMS is prior art and is not the innovation of this utility model.

[0032] The battery cell 2 is provided with a battery explosion-proof valve 21. In one embodiment, the battery explosion-proof valve 21 is located directly below the fire extinguishing hole 11, or in other words, the fire extinguishing hole 11 is located directly above the battery explosion-proof valve 21.

[0033] A battery end plate 3 is attached to both sides of several battery cells 2 by steel strips 4. In other words, battery end plates 3 are placed on both sides of several battery cells 2, and steel strips 4 are placed around the battery end plates 3 and the outer walls of several battery cells 2, thereby fixing several battery cells 2.

[0034] In one embodiment, the battery end plate 3 is an aluminum end plate, but it can also be an end plate of other materials, as long as it has a certain strength.

[0035] like Figure 1 - Figure 5 In the integrated battery with fire extinguishing module shown, the fire extinguishing module 5 is located above the battery explosion-proof valve 21. When the battery cell 2 experiences thermal runaway, the battery explosion-proof valve 21 will spray high-temperature gas. When the thermally sensitive wire 53 in the fire extinguishing module 5 reaches a certain temperature, it will activate and ignite the internal fire extinguishing pack 52, and spray a large amount of fire extinguishing gas at the gas injection hole 57, thereby extinguishing the fire in the battery cell 2 and preventing the spread of thermal runaway.

[0036] The above structure has fixed positions for the positive and negative busbars of the module, which simplifies the module structure and reduces the module cost. It also has BMS module mounting screw posts, which can be used to mount the BMS module bracket on top of the module.

[0037] Secondly, the above structure is equipped with a fire extinguishing module, which will spray a large amount of fire extinguishing gas when the battery cell experiences thermal runaway, thereby extinguishing the fire in the battery cell.

[0038] Furthermore, the aforementioned structure automatically triggers the fire suppression module by detecting the thermal runaway temperature through a thermally sensitive wire, ensuring timely fire suppression and a rapid response.

[0039] In addition, the fire extinguishing module in the above structure is equipped with moisture-proof paper to prevent the fire extinguishing module from becoming damp and thus failing.

[0040] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. An integrated battery holder with a fire extinguishing module, characterized in that: The battery includes an integrated battery bracket (1), the top surface of which is provided with several sets of series grooves (14), the bottom of which is provided with series holes (9), and series busbars (13) are provided in the series grooves (14). The two ends of the integrated battery bracket (1) are respectively provided with a negative busbar positioning area (6) and a positive busbar positioning area (7). A negative busbar (61) and a positive busbar (71) are respectively installed on the negative busbar positioning area (6) and the positive busbar positioning area (7). The integrated battery bracket (1) is provided with several fire extinguishing holes (11), and a fire extinguishing module (5) is installed in the fire extinguishing holes (11). The fire extinguishing module (5) includes a fire extinguishing tank (56), a fire extinguishing pack (52) is provided in the fire extinguishing tank (56), a module cover (51) is provided on the top of the fire extinguishing tank (56), a thermal wire (53) is connected to the fire extinguishing pack (52), and a number of gas injection holes (57) are provided at the bottom of the fire extinguishing tank (56).

2. An integrated battery support with fire suppression module according to claim 1, wherein: A moisture-proof paper (54) is placed between the fire extinguishing pack (52) and the bottom wall of the fire extinguishing tank (56), and a wire outlet hole (561) is provided on the side wall of the fire extinguishing tank (56).

3. The integrated battery support with fire suppression module of claim 1, wherein: The module cover (51) has a fastening hole (511) on its side, and the fire extinguishing tank (56) has a hole fastener (551) on its outer top, and the hole fastener (551) is fastened in the fastening hole (511).

4. The integrated battery support with fire suppression module of claim 1, wherein: The side wall of the series groove (14) is provided with a busbar fixing buckle (10), and the series busbar (13) is fixed below the busbar fixing buckle (10).

5. The integrated battery support with fire suppression module of claim 1, wherein: Both the negative busbar positioning area (6) and the positive busbar positioning area (7) are provided with busbar surrounds (8).

6. The integrated battery bracket with fire extinguishing module according to claim 1, characterized in that: The integrated battery bracket (1) is provided with at least two sets of BMS fixing screw posts (12).

7. The integrated battery support with fire suppression module of claim 1, wherein: Several battery cells (2) are located at the bottom of the integrated battery bracket (1), and the battery cells (2) are provided with battery explosion-proof valves (21).

8. An integrated battery support with fire suppression module according to claim 7, wherein: Battery end plates (3) are attached to both sides of several of the battery cells (2) by steel strips (4).

9. The integrated battery bracket with fire extinguishing module according to claim 1, characterized in that: Several fire extinguishing holes (11) are located in the center of the integrated battery bracket (1).

10. An integrated battery holder with a fire extinguishing module according to claim 7, characterized in that: Several of the cells (2) are connected in series via a series bus (13).

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