Battery pack housing and battery pack

Abstract

This utility model relates to the field of battery pack technology and discloses a battery pack shell and battery pack, including an outer shell, a top cover, and a bottom cover. An auxiliary placement mechanism is provided inside the outer shell, and multiple auxiliary placement mechanisms are provided, dividing the inner shell into multiple placement chambers for placing battery modules. The auxiliary placement mechanism includes a hollow rectangular frame and a pressing plate. The front and rear ends of the hollow rectangular frame are fixedly connected to the inner wall of the outer shell. When the battery module is placed into the chamber, a magnet is attracted to the ferrite stainless steel plate. At this time, the pressing cylinder does not extend, and the inner diameter of the chamber is larger, making it easier and less likely for the battery module to get stuck. After the battery module is placed, the top cover is closed, and the pressing plate at the bottom of the top cover is inserted between two ferrite stainless steel plates. Then, the ferrite stainless steel plates are pushed to move, causing the pressing cylinder to extend and press against the outer wall of the battery module, thus completing the fixation of the battery module.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, specifically to a battery pack housing and a battery pack. Background Technology

[0002] A battery pack is composed of multiple battery modules and includes a BMS (Battery Management System). It is the final product provided to users by the battery manufacturer and is now widely used in various electric devices, such as electric vehicles and power tools. The battery pack casing, as the carrier of the battery modules, plays a crucial role in the safe operation and protection of the battery modules. When placing battery modules, they often need to be arranged neatly one by one. To avoid shaking, the gaps between adjacent battery modules are small, or the gaps between the battery modules and the separators are small. This can cause placement inconvenience due to limited space. Summary of the Invention

[0003] The purpose of this utility model is to provide a battery pack housing and a battery pack to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a battery pack housing, including an outer shell, a top cover, and a bottom cover, wherein an auxiliary placement mechanism is provided inside the outer shell, and multiple auxiliary placement mechanisms are provided, dividing the inner shell into multiple placement chambers, which are used to place battery modules;

[0005] The auxiliary placement mechanism includes a hollow rectangular frame and an extrusion plate. The front and rear ends of the hollow rectangular frame are fixedly connected to the inner wall of the outer shell. The extrusion plate is fixedly installed at the bottom of the top cover. A ferrite stainless steel plate is fixedly installed at the center of the hollow rectangular frame. An installation plate is slidably arranged inside the hollow rectangular frame. There are two installation plates, which are symmetrically arranged on the left and right sides relative to the ferrite stainless steel plate. A magnet is fixedly installed on the outer wall of the installation plate facing the ferrite stainless steel plate, and a clamping cylinder is fixedly installed on the outer wall of the other side. The clamping cylinder moves through the inner wall of the hollow rectangular frame. The extrusion plate is inserted into the hollow rectangular frame, and the extrusion plate presses the two ferrite stainless steel plates tightly against the inner wall of the hollow rectangular frame.

[0006] Furthermore, a gap is left between the top of the hollow rectangular frame and the bottom of the top cover, the top of the mounting plate is provided with an integrally formed arc-shaped protrusion, and the bottom of the extrusion plate is provided with a trapezoidal protrusion that is smaller at the bottom and larger at the top.

[0007] Furthermore, an elastic insulating protective pad is fixedly installed on the inner wall of the outer casing, which separates the battery module from the inner wall of the outer casing. A pressing pad is fixedly installed on the bottom of the top cover, which presses against the top of the battery module.

[0008] Furthermore, the left ends of the top cover and the bottom cover are both connected to an inlet pipe and an outlet pipe, and the ends of the inlet pipe and the outlet pipe are both equipped with valves. The bottom of the top cover and the top of the bottom cover are both provided with outlet holes, which are aligned with the gap between the battery module and the hollow rectangular frame.

[0009] Furthermore, pressure relief valves are connected to both the left and right sides of the outer casing.

[0010] A battery pack includes a battery module and a battery pack housing as described in any one of the claims; the battery module is disposed within the battery pack housing.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When the battery module is placed into the cavity, the magnet is attracted to the ferrite stainless steel plate. At this time, the clamping cylinder is not extended, and the inner diameter of the cavity is larger, making it easier to place the battery module and less likely to get stuck. After the battery module is placed, close the top cover. The pressing plate at the bottom of the top cover is inserted between the two ferrite stainless steel plates. Then push the ferrite stainless steel plates to move, so that the clamping cylinder extends and presses against the outer wall of the battery module, thus completing the fixation of the battery module. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This utility model Figure 1 A structural schematic diagram of the front sectional view;

[0015] Figure 3 This is a schematic diagram of the battery module, auxiliary placement mechanism, and elastic insulating protective pad of this utility model.

[0016] Figure 4 This is a structural schematic diagram of the front sectional view of the auxiliary placement mechanism of this utility model;

[0017] Figure 5 This is a structural schematic diagram of the exploded view of the auxiliary placement mechanism of this utility model;

[0018] Figure 6 This is a structural schematic diagram of the front sectional view of the top cover of this utility model.

[0019] In the diagram: 1. Outer shell; 2. Top cover; 3. Bottom cover; 4. Battery module; 5. Auxiliary placement mechanism; 501. Hollow rectangular frame; 502. Extrusion plate; 503. Ferritic stainless steel plate; 504. Mounting plate; 505. Tightening cylinder; 506. Magnet; 6. Elastic insulating protective pad; 7. Arc-shaped protrusion; 8. Liquid inlet pipe; 9. Liquid outlet pipe; 10. Liquid outlet hole; 11. Pressure pad; 12. Pressure relief valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1-6 The present invention provides a technical solution: a battery pack housing, including an outer shell 1, a top cover 2, and a bottom cover 3. An auxiliary placement mechanism 5 is provided inside the outer shell 1. Multiple auxiliary placement mechanisms 5 are provided, and the outer shell 1 is divided into multiple placement chambers. The placement chambers are used to place battery modules 4.

[0022] The auxiliary placement mechanism 5 includes a hollow rectangular frame 501 and an extrusion plate 502. The front and rear ends of the hollow rectangular frame 501 are fixedly connected to the inner wall of the outer shell 1. The extrusion plate 502 is fixedly installed at the bottom of the top cover 2. A ferrite stainless steel plate 503 is fixedly installed at the center of the hollow rectangular frame 501. An installation plate 504 is slidably arranged inside the hollow rectangular frame 501. Two installation plates 504 are provided and are symmetrically arranged with respect to the ferrite stainless steel plate 503. A magnet 506 is fixedly installed on the outer wall of the installation plate 504 facing the ferrite stainless steel plate 503, and a clamping cylinder 505 is fixedly installed on the outer wall of the other side. The clamping cylinder 505 movably penetrates the inner wall of the hollow rectangular frame 501, and the extrusion plate 502 is used for pressing. Plate 502 is inserted into the hollow rectangular frame 501, and the pressing plate 502 presses the two ferrite stainless steel plates 503 tightly against the inner wall of the hollow rectangular frame 501. When the battery module 4 is placed into the cavity, the magnet 506 is attracted to the ferrite stainless steel plate 503. At this time, the pressing cylinder 505 does not protrude, and the inner diameter of the cavity is larger, making it easier to place the battery module 4 and less likely to get stuck. After the battery module 4 is placed, the top cover 2 is closed, and the pressing plate 502 at the bottom of the top cover 2 is inserted between the two ferrite stainless steel plates 503. Then, the ferrite stainless steel plates 503 are pushed to move, so that the pressing cylinder 505 protrudes and presses against the outer wall of the battery module 4, thus completing the fixation of the battery module 4.

[0023] The top of the hollow rectangular frame 501 and the bottom of the top cover 2 are left with a gap, so that the lines or copper cables connecting the battery module 4 can pass through. The top of the mounting plate 504 is provided with an integrally formed arc-shaped protrusion 7, and the bottom of the extrusion plate 502 is provided with a trapezoidal protrusion that is smaller at the bottom and larger at the top. The arc-shaped protrusion 7 and the trapezoidal protrusion are provided so that the bottom of the extrusion plate 502 can be better inserted between the two mounting plates 504.

[0024] An elastic insulating protective pad 6 is fixedly installed on the inner wall of the outer casing 1. The elastic insulating protective pad 6 separates the battery module 4 from the inner wall of the outer casing 1. A pressing pad 11 is fixedly installed on the bottom of the top cover 2. The pressing pad 11 presses on the top of the battery module 4. The elastic insulating protective pad 6 can protect the battery module 4, and the pressing pad 11 is used to press the battery module 4 tightly.

[0025] The top cover 2 and the bottom cover 3 are both connected to the left end of the liquid inlet pipe 8 and the liquid outlet pipe 9. The ends of the liquid inlet pipe 8 and the liquid outlet pipe 9 are equipped with valves. The bottom of the top cover 2 and the top of the bottom cover 3 are both provided with liquid outlet holes 10. The liquid outlet holes 10 are aligned with the gap between the battery module 4 and the hollow rectangular frame 501. When the temperature of the battery module 4 is too high, the externally set coolant circulation system (not shown in the figure) is used to introduce coolant into the cavity inside the top cover 2 and the bottom cover 3. The coolant is sprayed from the liquid outlet holes 10 onto the battery module 4 to quickly cool down the battery module 4.

[0026] Pressure relief valves 12 are connected to both the left and right sides of the outer casing 1. When the battery module 4 experiences thermal runaway, the pressure relief valves 12 can discharge high-temperature and high-pressure gas.

[0027] A battery pack includes a battery module 4 and the aforementioned battery pack housing; the battery module 4 is disposed within the battery pack housing.

[0028] Working principle: In use, first fix the bottom cover 3 to the bottom of the outer shell 1, then place the battery modules 4 one by one into the cavity. The magnet 506 is attracted to the ferrite stainless steel plate 503. At this time, the clamping cylinder 505 is not extended, and the inner diameter of the cavity is larger, making it easier to place the battery modules 4 and less likely to get stuck. After the battery modules 4 are placed, close the top cover 2. The pressing plate 502 at the bottom of the top cover 2 is inserted between the two ferrite stainless steel plates 503. Then push the ferrite stainless steel plate 503 to move, so that the clamping cylinder 505 extends out and presses against the outer wall of the battery module 4, thus completing the fixation of the battery module 4. Then fix the top cover 2.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A battery pack housing, comprising an outer shell (1), a top cover (2), and a bottom cover (3), characterized in that: An auxiliary placement mechanism (5) is provided inside the outer shell (1). Multiple auxiliary placement mechanisms (5) are provided, and the outer shell (1) is divided into multiple placement chambers. The placement chambers are used to place the battery module (4). The auxiliary placement mechanism (5) includes a hollow rectangular frame (501) and an extrusion plate (502). The front and rear ends of the hollow rectangular frame (501) are fixedly connected to the inner wall of the outer shell (1). The extrusion plate (502) is fixedly installed at the bottom of the top cover (2). A ferritic stainless steel plate (503) is fixedly installed at the center of the hollow rectangular frame (501). An installation plate (504) is slidably arranged inside the hollow rectangular frame (501). There are two installation plates (504), and they are arranged relative to the ferritic stainless steel plate. The steel plates (503) are arranged symmetrically on the left and right. The mounting plate (504) has a magnet (506) fixedly installed on the outer wall of one side facing the ferrite stainless steel plate (503), and a clamping cylinder (505) fixedly installed on the other side. The clamping cylinder (505) movably penetrates the inner wall of the hollow rectangular frame (501). The extrusion plate (502) is inserted into the hollow rectangular frame (501), and the extrusion plate (502) presses the two ferrite stainless steel plates (503) tightly against the inner wall of the hollow rectangular frame (501).

2. The battery pack housing according to claim 1, characterized in that: The top of the hollow rectangular frame (501) has a gap with the bottom of the top cover (2), the top of the mounting plate (504) is provided with an integrally formed arc-shaped protrusion (7), and the bottom of the extrusion plate (502) is provided with a trapezoidal protrusion that is smaller at the bottom and larger at the top.

3. A battery pack housing according to claim 1, characterized in that: An elastic insulating protective pad (6) is fixedly installed on the inner wall of the outer shell (1). The elastic insulating protective pad (6) separates the battery module (4) from the inner wall of the outer shell (1). A pressing pad (11) is fixedly installed on the bottom of the top cover (2). The pressing pad (11) presses on the top of the battery module (4).

4. A battery pack housing according to claim 1, characterized in that: The top cover (2) and the bottom cover (3) are connected to the left end of the liquid inlet pipe (8) and the liquid outlet pipe (9). The ends of the liquid inlet pipe (8) and the liquid outlet pipe (9) are equipped with valves. The bottom of the top cover (2) and the top of the bottom cover (3) are provided with liquid outlet holes (10). The liquid outlet holes (10) are aligned with the gap between the battery module (4) and the hollow rectangular frame (501).

5. A battery pack housing according to claim 1, characterized in that: Pressure relief valves (12) are connected to both the left and right sides of the outer casing (1).

6. A battery pack, characterized in that, It includes a battery module (4) and a battery pack housing as described in any one of claims 1-5; the battery module (4) is disposed within the battery pack housing.

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