Anti-flatulence battery module

Abstract

The utility model relates to an anti-flatulence battery module. The anti-flatulence battery module comprises single batteries, a box body and a cover body, wherein the upper end of the box body is opened; the cover body covers the box body; the battery monomers are arranged in the box body; a containing cavity is formed in the cover body, a sealing bag in which electrolyte replenishing liquid is packaged is arranged in the containing cavity, and an electric check valve is arranged on the lower surface of the sealing bag; a water inlet and a water outlet of the electric check valve are respectively communicated with the inner cavity of the sealing bag and the inner cavity of the battery monomer; a water level sensor for detecting the water level of the electrolyte is arranged in an inner cavity of the battery monomer, a control circuit board is fixedly arranged at the lower end of the cover body, and the water level sensor and the electric check valve are electrically connected with the control circuit board; according to the battery module provided by the utility model, when the water level sensor detects that the water level of the electrolyte in the single battery is insufficient, the control circuit board controls the opening of the check valve, so that the electrolyte is automatically supplemented, and the battery module is simple in structure, convenient to use and relatively good in practicability.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery module that prevents gas expansion. Background Technology

[0002] A battery module is a type of battery assembly widely used in energy storage and power applications. Most battery modules consist of multiple individual battery cells connected in series or parallel, with each cell containing core components such as a positive electrode, a negative electrode, and a separator. Taking lithium-ion batteries as an example, lithium-ion batteries store and release energy by the movement of lithium ions between the positive and negative electrodes. They are widely used due to their high energy density, long lifespan, low self-discharge rate, and high output voltage.

[0003] However, over time and with the use of lithium-ion batteries, the electrolyte will decrease due to various reasons such as evaporation and consumption by internal chemical reactions. When the electrolyte decreases to a certain level, it will reduce the battery's ability to discharge or charge in a short time, thereby generating abnormal gas inside the battery, causing the battery casing to expand or deform, resulting in gas swelling. This can lead to serious consequences such as explosions and fires, endangering people's lives and property. Therefore, a battery module that can solve the above problems is proposed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a battery module that prevents gas expansion, which can effectively solve the aforementioned problems.

[0005] To achieve the above requirements, the technical solution adopted by this utility model to solve its technical problem is as follows: A battery module with anti-bulging capability is provided, comprising a battery cell, a housing with an opening at the top, and a cover on the housing; the battery cell is disposed within the housing; the cover has a receiving cavity, and a sealed bag containing electrolyte replenishment fluid is disposed within the receiving cavity; an electric stop valve is disposed on the lower surface of the sealed bag; the inlet and outlet of the electric stop valve are respectively connected to the inner cavity of the sealed bag and the inner cavity of the battery cell; a water level sensor for detecting the electrolyte level is disposed within the inner cavity of the battery cell; a control circuit board is fixedly disposed at the lower end of the cover, and the water level sensor and the electric stop valve are electrically connected to the control circuit board.

[0006] This utility model discloses a battery module for preventing gas expansion, wherein the cover includes a mounting plate and a mounting shell detachably disposed on the mounting plate; the upper surface of the mounting plate and the mounting shell together form a receiving cavity; and the mounting plate is provided with a mounting hole for installing an electric check valve.

[0007] This utility model discloses an anti-bulging battery module, wherein the upper surface of the mounting shell is provided with a connector that connects the outside to the inner cavity of the sealed bag; the connector has an opening that connects the outside to the inner cavity of the sealed bag; the upper end of the connector is also provided with a cover plate that is detachably connected to it, and the lower surface of the cover plate is provided with a rubber pad; when installed in place, the rubber pad seals the opening.

[0008] This utility model discloses an anti-bulging battery module, wherein a sealing element is provided on the opening of the sealed bag that connects to the electric stop valve, and the end of the sealing element away from the sealed bag is located in the water inlet of the electric stop valve.

[0009] This utility model discloses an anti-bulging battery module, wherein the electric flow stop valve includes a valve body, a flow channel vertically disposed within the valve body, and a blocking block for blocking the flow channel; the side wall of the flow channel is provided with a receiving groove for accommodating the blocking block; the valve body is also provided with a first electromagnet and a second electromagnet; the first electromagnet is disposed at one end of the receiving groove, and the second electromagnet is disposed at the other end of the receiving groove away from the first electromagnet; when the blocking block is disposed in the receiving groove, the flow channel connects the inner cavity of the sealed bag and the inner cavity of the battery cell.

[0010] This utility model discloses an anti-bulging battery module, wherein a cover plate, a connector, a sealing bag, two sealing components, two electric flow control valves, and two battery cells together form a working unit. There are two working units arranged in a box, one in front of the other.

[0011] The beneficial effects of this utility model are as follows:

[0012] The battery module provided by this utility model uses a water level sensor to detect the electrolyte level inside the battery cells. Once the water level falls below a set value, the control circuit board receives a signal from the water level sensor and controls the electric check valve to open the flow channel between the sealed bag and the battery cell, allowing electrolyte replenishment from the sealed bag to flow into the battery cell and replenish the electrolyte level to a safe range. Subsequently, the control circuit board controls the check valve to close the flow channel connecting the inner cavity of the sealed bag and the inner cavity of the battery cell, keeping both the inner cavity of the battery cell and the sealed bag sealed. This structure can monitor the electrolyte capacity inside the battery cells at all times and replenish the electrolyte in a timely manner when it decreases, avoiding battery bulging caused by electrolyte reduction, effectively protecting people's lives and property, and has good practicality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a left-side sectional view of a battery module designed to prevent gas expansion according to this utility model.

[0015] Figure 2 yes Figure 1 Enlarged view of point A.

[0016] Figure 3 This is a bottom view of the cover of a battery module designed to prevent gas expansion, according to this utility model.

[0017] Figure 4 This is a left sectional view of the cover of a battery module designed to prevent gas expansion according to this utility model.

[0018] In the diagram: 1. Battery cell; 10. Water level sensor; 2. Housing; 3. Cover; 30. Receiving cavity; 31. Control circuit board; 32. Mounting plate; 33. Mounting shell; 34. Mounting hole; 4. Sealing bag; 40. Seal; 5. Electric check valve; 50. Valve body; 51. Flow channel; 52. Blocking block; 53. Receiving groove; 54. First electromagnet; 55. Second electromagnet; 6. Connector; 60. Opening; 61. Cover plate; 62. Rubber pad. Detailed Implementation

[0019] The terms "first," "second," "third," and "fourth," etc., used in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0020] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] "Multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. The character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0022] Furthermore, the terms indicating orientation, such as "up," "down," "left," "right," "upper end," "lower end," and "longitudinal," are all based on the posture and position of the device or equipment described in this solution during normal use.

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, a clear and complete description will be provided below in conjunction with the technical solutions in the embodiments of this utility model. Obviously, the described embodiments are some, but not all, embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] The device includes a battery cell 1, a housing 2 with an opening 60 at the top, and a cover 3 covering the housing 2. The battery cell 1 is located inside the housing 2. The cover 3 has a receiving cavity 30, and a sealed bag 4 containing electrolyte replenishment fluid is located inside the receiving cavity 30. An electric check valve 5 is located on the lower surface of the sealed bag 4. The inlet and outlet of the electric check valve 5 are respectively connected to the inner cavity of the sealed bag 4 and the inner cavity of the battery cell 1. A water level sensor 10 for detecting the electrolyte level is located inside the inner cavity of the battery cell 1. A control circuit board 31 is fixed at the lower end of the cover 3. The water level sensor 10 and the electric check valve 5 are both electrically connected to the control circuit board 31.

[0025] The battery module provided by this utility model uses a water level sensor 10 to detect the electrolyte level inside the battery cell 1. Once the water level falls below a set value, the control circuit board 31 receives a signal from the water level sensor 10 and controls the electric check valve 5 to open the flow channel 51 between the sealing bag 4 and the battery cell 1, allowing the electrolyte replenishment liquid in the sealing bag 4 to flow into the battery cell 1, replenishing the electrolyte level in the battery cell 1 to a safe range. Subsequently, the control circuit board 31 controls the check valve to close the flow channel 51 connecting the inner cavity of the sealing bag 4 and the inner cavity of the battery cell 1, keeping both the inner cavities of the battery cell 1 and the sealing bag 4 sealed. This structure can monitor the capacity of the electrolyte in the battery cell 1 at all times and replenish the electrolyte in a timely manner when it decreases, avoiding battery bulging caused by electrolyte reduction, effectively protecting people's lives and property, and has good practicality.

[0026] In this embodiment, the cover 3 includes a mounting plate 32 and a mounting shell 33 detachably disposed on the mounting plate 32; the upper surface of the mounting plate 32 and the mounting shell 33 together form a receiving cavity 30; the mounting plate 32 is provided with a mounting hole 34 for installing the electric stop valve 5; during installation, the mounting plate 32 is first placed on the box 2, then the sealing bag 4 is placed on the mounting plate 32, and then the mounting shell 33 is placed on the mounting plate 32. The installation steps are quick and simple, and easy to use.

[0027] In this embodiment, the upper surface of the mounting shell 33 is provided with a connector 6 connecting the outside to the inner cavity of the sealed bag 4; the connector 6 has an opening 60 connecting the outside to the inner cavity of the sealed bag 4; the upper end of the connector 6 is also provided with a cover plate 61 that engages with it, and the lower surface of the cover plate 61 is provided with a rubber pad 62; when installed in place, the rubber pad 62 seals the opening 60; the user can add electrolyte replenishing fluid into the sealed bag 4 through the opening 60 on the connector 6 without replacing the sealed bag 4 or disassembling the box 2, which has good practicality. In this embodiment, the opening 60 connecting the sealed bag 4 and the electric check valve 5 is provided with a sealing element 40, which is made of rubber; the end of the sealing element 40 away from the sealed bag 4 is located in the inlet of the electric check valve 5; to prevent the electrolyte replenishing fluid in the sealed bag 4 from leaking into the box 2 and causing unnecessary losses.

[0028] In this embodiment, the electric flow stop valve 5 includes a valve body 50, a flow channel 51 vertically disposed within the valve body 50, and a blocking block 52 blocking the flow channel 51; the blocking block 52 is made of iron; the side wall of the flow channel 51 is provided with a receiving groove 53 for accommodating the blocking block 52; the valve body 50 is also provided with a first electromagnet 54 and a second electromagnet 55, both of which are connected to an external power source, and the external power source is electrically connected to the control circuit board 31; the first electromagnet 54 is disposed at one end of the receiving groove 53, and the second electromagnet 55 is disposed at the other end of the receiving groove 53 away from the first electromagnet 54; when the blocking block 52 is disposed within the receiving groove 53, the flow channel 51 connects the inner cavity of the sealing bag 4 and the inner cavity of the battery cell 1. When the electrolyte capacity in battery cell 1 is lower than the set value, the control circuit board 31 receives the signal transmitted from the water level sensor 10 and energizes the coil on the first electromagnet 54, sucking the sealing block 52 into the receiving groove 53, so that the inner cavity of the sealing bag 4 and the inner cavity of the battery cell 1 are connected through the flow channel 51; when the electrolyte in the battery cell 1 is replenished, the control circuit board 31 stops energizing the coil on the first electromagnet 54 and energizes the coil on the second electromagnet 55, sucking the sealing block 52 out of the receiving groove 53 and sealing the flow channel 51 to prevent the electrolyte replenishment liquid from continuing to flow into the inner cavity of the battery.

[0029] In this embodiment, the cover plate 61, connector 6, sealing bag 4, two sealing elements 40, two electric flow stop valves 5 and two battery cells 1 together form a working unit. There are two working units arranged in front and behind each other inside the housing 2; this increases the usable power and has good practicality.

[0030] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A battery module designed to prevent gas buildup, characterized in that, The device includes a battery cell, a housing with an opening at the top, and a cover over the housing. The battery cell is housed within the housing. The cover contains a cavity containing a sealed bag filled with electrolyte replenishment solution. An electric check valve is located on the lower surface of the sealed bag. The inlet and outlet of the electric check valve are connected to the inner cavity of the sealed bag and the inner cavity of the battery cell, respectively. A level sensor for detecting the electrolyte level is located within the inner cavity of the battery cell. A control circuit board is fixed to the lower end of the cover. The level sensor and the electric check valve are both electrically connected to the control circuit board.

2. The anti-bulging battery module according to claim 1, characterized in that, The cover includes a mounting plate and a mounting shell detachably mounted on the mounting plate; the upper surface of the mounting plate and the mounting shell together enclose the receiving cavity; the mounting plate is provided with mounting holes for mounting the electric check valve.

3. The anti-bulging battery module according to claim 2, characterized in that, The upper surface of the mounting shell is provided with a connector that connects the outside to the inner cavity of the sealed bag; the connector has an opening that connects the outside to the inner cavity of the sealed bag; the upper end of the connector is also provided with a cover plate that is detachably connected to it, and the lower surface of the cover plate is provided with a rubber pad; when installed in place, the rubber pad seals the opening.

4. The anti-bulging battery module according to claim 3, characterized in that, The opening of the sealed bag that connects to the electric stop valve is provided with a sealing element, and the end of the sealing element away from the sealed bag is located inside the water inlet of the electric stop valve.

5. The anti-bulging battery module according to claim 4, characterized in that, The cover plate, the connector, the sealing bag, the two sealing elements, the two electric flow stop valves, and the two battery cells together form a working unit. There are two working units arranged in front of and behind each other inside the box.

6. The anti-bulging battery module according to claim 4, characterized in that, The electric flow stop valve includes a valve body, a flow channel vertically disposed within the valve body, and a blocking block for blocking the flow channel; a receiving groove for accommodating the blocking block is provided on the side wall of the flow channel; a first electromagnet and a second electromagnet are also disposed within the valve body; the first electromagnet is disposed at one end of the receiving groove, and the second electromagnet is disposed at the other end of the receiving groove away from the first electromagnet; when the blocking block is disposed within the receiving groove, the flow channel connects the inner cavity of the sealing bag and the inner cavity of the battery cell.

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