Explosion-proof balance valve mounting box and battery explosion-proof balance device thereof

Abstract

The utility model provides an explosion-proof balance valve mounting box and a battery explosion-proof balancing device, the mounting box comprises side plates, end plates and a partition plate, the side plates enclose to form a containing cavity with two open ends, and the containing cavity forms a first cavity and a second cavity through the partition plate; the end plate is arranged at one end of the containing cavity and comprises a first plate covering the first cavity and a second plate covering the second cavity. The first plate is provided with a first through hole communicated with the first cavity, and the second plate is provided with a second through hole communicated with the second cavity; at least one of the first cavity side wall and the second cavity side wall is provided with a plurality of first connecting pieces; and / or at least one of the top wall of the first chamber and the top wall of the second chamber is provided with a plurality of second connecting pieces. The utility model has the advantages that each functional module is designed into a modular mounting structure and is detachably connected to each cavity of the mounting box, the mounting is simple, modular selection and mounting can be carried out according to configuration, and the replacement cost of the functional modules is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile power battery systems, in particular to an explosion-proof balancing valve installation box and a battery explosion-proof balancing device thereof. Background Art

[0002] At present, the explosion-proof valve of new energy vehicles is used to protect the safety of batteries in thermal runaway and prevent the explosion of battery casings. At the same time, more and more car companies are adding sensor signals for heat diffusion alarms in the battery packs, such as pressure signals, gas detection signals, etc. Due to the temperature changes of new energy batteries, condensation water often appears in the battery packs. Therefore, some car companies have also added dehumidification or moisture-absorbing materials in the battery packs. The above multiple functions are composed of different individual parts, each of which realizes its own function. Each part is separately molded and installed, which is costly and occupies different installation spaces, taking up a lot of space. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an explosion-proof balancing valve installation box, which divides the installation box into two chambers, and arranges a first connecting piece and / or a second connecting piece in each chamber, so that each functional module can be detachably connected to each chamber, and modular selection can be performed.

[0004] The utility model solves the technical problem by adopting the following technical solutions:

[0005] A explosion-proof balancing valve installation box comprises a side plate, an end plate and a partition plate, wherein the side plates enclose a accommodating cavity with openings at both ends, and the accommodating cavity forms a first chamber and a second chamber through the partition plate; the end plate is arranged at one end of the accommodating cavity, and the end plate comprises a first plate covering the first chamber and a second plate covering the second chamber; the first plate is provided with a first through hole that passes through the first chamber, and the second plate is provided with a second through hole that passes through the second chamber; at least one of the first chamber side wall and the second chamber side wall is provided with a plurality of first connecting pieces; and / or at least one of the first chamber top wall and the second chamber top wall is provided with a plurality of second connecting pieces.

[0006] Further, one end of the first through hole facing the first chamber and / or one end of the second through hole facing the second chamber is provided with a first countersunk structure adapted to the height of the air pressure regulating valve.

[0007] Furthermore, the first chamber side wall and the second chamber side wall are both provided with a plurality of first connecting parts, the first chamber top wall and the second chamber top wall are both provided with a plurality of second connecting parts, the first through hole and the second through hole are the same, the first chamber and the second chamber are the same, so that the first channel and the second channel are the same, and both can be installed with explosion-proof structures and auxiliary function structures.

[0008] Furthermore, the first connecting member is a snap connector or a plug connector; the second connecting member is a snap connector, a plug connector or a screw connector.

[0009] Furthermore, the first through hole and the second through hole are circular holes, and the first chamber and the second chamber are rectangular chambers, so that the area is increased when the thickness of the fire protection module and the moisture absorption module is reduced.

[0010] Furthermore, a first annular groove coaxial with the first through hole is provided at one end of the first plate away from the first chamber, and a second annular groove coaxial with the second through hole is provided at one end of the second plate away from the second chamber; a first flange is circumferentially provided on the end plate, and a third annular groove is circumferentially provided on a side of the first flange close to the side plate; a second flange is circumferentially provided on one end of the side plate away from the end plate, and a fourth annular groove is circumferentially provided on a side of the second flange away from the side plate, for installing a sealing ring to seal with the battery casing.

[0011] Furthermore, a battery explosion-proof balancing device includes the above-mentioned explosion-proof balancing valve installation box, and also includes a first module and a second module, the first module and the second module are respectively detachably arranged in the first through hole and the second through hole; the first module is an explosion-proof valve or an air pressure regulating valve; the second module is an explosion-proof valve or an air pressure regulating valve.

[0012] Furthermore, the explosion-proof balancing device also includes at least one of a fire protection module, a moisture absorption module and an alarm module, and the side wall of the fire protection module is provided with a third connecting piece adapted to the first connecting piece; the side wall of the moisture absorption module and the side wall of the alarm module are both provided with a fourth connecting piece adapted to the second connecting piece.

[0013] Furthermore, the side wall of the moisture absorption module is also provided with a second connecting piece for cooperating and connecting with a fourth connecting piece provided on the side wall of the alarm module.

[0014] Furthermore, the air pressure regulating valve includes a balancing module; or the air pressure regulating valve includes a balancing module and a moisture-proof module detachably arranged on the balancing module, so that the functions of the air pressure regulating valve are modularly selected.

[0015] Furthermore, the alarm module includes a housing, a chip and a sensor probe; the chip is arranged in the housing, and the chip is electrically connected with a transmission interface; the transmission interface is arranged on a side of the housing facing the battery cell, and is used to electrically connect to the battery manager;

[0016] The sensor probe includes a first sensor, which is arranged in an explosion-proof valve, and the shell is provided with a probe interface electrically connected to the chip for electrically connecting the first sensor; and / or the sensor probe includes a second sensor arranged in the shell, and a vent is provided on a side of the shell facing the battery cell, and the second sensor is close to the vent.

[0017] Furthermore, the first sensor includes a first connecting line, the alarm module includes a second connecting line, one interface of the second connecting line is adapted to the probe interface, and the other interface is adapted to the interface of the first connecting line, and the interface of the first connecting line and the probe interface are connected via the second connecting line.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] (1) It integrates multiple functions such as fire prevention, explosion prevention, air pressure balance, dehumidification, and active alarm into one, with a compact structure and lower cost than the sum of the individual components.

[0020] (2) Each functional module is designed as a modular installation structure and can be detachably connected to each chamber of the installation box. The installation is simple and modular installation can be performed according to the configuration, thereby reducing the cost of replacing the functional modules.

[0021] (3) The explosion-proof exhaust channel and the balanced air pressure channel are set as two separate channels, which makes the structure of the explosion-proof valve and the air pressure regulating valve simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the structure of the explosion-proof balancing valve installation box of the utility model.

[0023] Figure 2 It is a schematic diagram of the AA section of the installation box of the explosion-proof balancing valve of the utility model.

[0024] Figure 3 This is a schematic diagram of the structure of the battery explosion-proof balancing device of the utility model.

[0025] Figure 4 This is an exploded view of the battery explosion-proof balancing device of the utility model installed on the battery casing.

[0026] Figure 5 This is a schematic diagram of the structure of the explosion-proof valve of the utility model.

[0027] Figure 6 This is a schematic diagram of the fire protection module structure of the utility model.

[0028] Figure 7 This is a schematic diagram of the structure of the air pressure regulating valve of the utility model.

[0029] Figure 8 This is a schematic diagram of the structure of the moisture absorption module of the utility model.

[0030] Fig. 9 This is a schematic diagram of the structure of the alarm module of the utility model.

[0031] In the figure: 100-installation box; 1-side plate; 11-second flange; 111-fourth annular groove; 2-end plate; 21-first plate; 211-first through hole; 212-first annular groove; 22-second plate; 221-second through hole; 222-second annular groove; 23-first flange; 231-third annular groove; 232-fourth through hole; 3-partition; 31-connecting hole; 32-fifth through hole; 4a-first connecting piece; 5a-second connecting piece; 6-first countersunk structure; 7-second countersunk structure; 200-explosion-proof valve; 201-first buckle; 202-end cover; 300-air pressure regulating valve; 400-fireproof module; 500-moisture absorption module; 600-alarm module; 601-housing; 602-transmission interface; 603-vent; 4b-third connecting piece; 5b-fourth connecting piece; 700-battery housing. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0033] In the description of the present utility model, it should be noted that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, it should be noted that the orientation or position relationship indicated by the terms "inside" and "outside" is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the equipment or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. The term "and / or" when used to list two or more items means that any one of the listed items can be adopted by itself, or any combination of two or more of the listed items can be adopted.

[0034] The utility model provides an explosion-proof balancing valve installation box 100, combined with Figure 1 and Figure 2As shown, the installation box 100 includes a side plate 1, an end plate 2 and a partition plate 3, the side plate 1 encloses a accommodating cavity with openings at both ends, and the accommodating cavity forms a first chamber and a second chamber through the partition plate 3; the end plate 2 is arranged at one end of the accommodating cavity, and the end plate 2 includes a first plate 21 covering the first chamber and a second plate 22 covering the second chamber; the first plate 21 is provided with a first through hole 211 that passes through the first chamber, and the second plate 22 is provided with a second through hole 221 that passes through the second chamber; at least one of the first chamber side wall and the second chamber side wall is provided with a plurality of first connecting members 4a; and / or, at least one of the first chamber top wall and the second chamber top wall is provided with a plurality of second connecting members 5a.

[0035] The first through hole 211 and the first chamber form a first channel, the second through hole 221 and the second chamber form a second channel, and the first channel and the second channel can be installed with an explosion-proof structure and an auxiliary function structure respectively, or can be installed with an explosion-proof structure or an auxiliary function structure at the same time. Figure 3 and Figure 4 As shown, the explosion-proof structure includes a modular explosion-proof valve 200 and a fire-proof module 400 that are distributed from the outside to the inside. The explosion-proof valve 200 can be opened when the battery is thermally out of control to allow the hot gas in the heat diffusion to pass through. The fire-proof module 400 includes a fire-proof net or a fire-proof chamber to prevent the flame from spraying out. The explosion-proof structure can play the role of fire prevention and explosion prevention. The auxiliary function structure includes a modular air pressure regulating valve 300, a moisture absorption module 500 and an alarm module 600 that are distributed from the outside to the inside. The air pressure regulating valve 300 can balance the pressure inside and outside the battery pack, the moisture absorption module 500 can absorb the condensed water in the battery pack, and the alarm module 600 can actively alarm. The auxiliary function module can balance the air pressure, dehumidify, and actively alarm. Each functional module is designed as a modular installation structure, which can be detachably connected to each chamber, and is easy to install. The installation box 100 can be equipped with only basic functional modules such as explosion-proof valve 200 or air pressure regulating valve 300, or can be equipped with multiple functions such as fire prevention, explosion prevention, balanced air pressure, dehumidification, and active alarm according to the configuration. The structure is compact and the cost is lower than the sum of the individual components. The cost of replacing functional modules can also be reduced, and more advanced functional modules can be replaced later, saving the cost of updating functional modules.

[0036] The explosion-proof valve 200 and the air pressure regulating valve 300 are detachably disposed in the first through hole 211 and the second through hole 221. Figure 2 , Figure 5 and Figure 7As shown, a first buckle 201 can be provided at the inner end of the explosion-proof valve 200 and the air pressure regulating valve 300. During installation, the explosion-proof valve 200 and the air pressure regulating valve 300 are inserted into the first through hole 211 and the second through hole 221, and the end cover 202 of the explosion-proof valve 200 and the end cover 202 of the air pressure regulating valve 300 are clamped on the outer side of the end plate 2, and the first buckle 201 of the explosion-proof valve 200 and the first buckle 201 of the air pressure regulating valve 300 are clamped on the inner side of the end plate 2, thereby fixing the explosion-proof valve 200 and the air pressure regulating valve 300. Of course, a third through hole can also be provided on the end cover 202, and a first threaded hole can be provided on the end plate 2, and the explosion-proof valve 200 and the air pressure regulating valve 300 can be fixed in the first through hole 211 and the second through hole 221 by screws.

[0037] The fire prevention module 400 is detachably arranged in the chamber corresponding to the explosion-proof valve 200 through the first connecting member 4a, and the moisture absorption module 500 and the alarm module 600 are detachably arranged in the chamber corresponding to the air pressure regulating valve 300 through the second connecting member 5a. The inner wall of the side plate 1 of the corresponding chamber and the partition 3 form the side wall of the corresponding chamber, that is, the inner wall of the side plate 1 and the partition 3 enclosed to form the first chamber form the side wall of the first chamber, and the inner wall of the side plate 1 and the partition 3 enclosed to form the second chamber form the side wall of the second chamber. Preferably, the partition 3 can be provided with a connecting hole 31 for connecting the first chamber and the second chamber, so that the air flow can flow between the first chamber and the second chamber, thereby improving the exhaust and air pressure regulation efficiency. The end plate 2 covering the corresponding chamber forms the top wall of the corresponding chamber, that is, the first plate 21 covering the first chamber forms the top wall of the first chamber, and the second plate 22 covering the second chamber forms the top wall of the second chamber.

[0038] When one of the first chamber side wall and the second chamber side wall is provided with a plurality of first connecting pieces 4a, an explosion-proof structure can be installed in the corresponding channel; when one of the first chamber top wall and the second chamber top wall is provided with a plurality of second connecting pieces 5a, an auxiliary functional structure can be installed in the corresponding channel; when both the first chamber side wall and the second chamber side wall are provided with a plurality of first connecting pieces 4a, an explosion-proof structure can be installed in the first channel and the second channel; when both the first chamber top wall and the second chamber top wall are provided with a plurality of second connecting pieces 5a, an auxiliary functional structure can be installed in the first channel and the second channel; when at least one of the first chamber side wall and the second chamber side wall is provided with a plurality of first connecting pieces 4a and at least one of the first chamber top wall and the second chamber top wall is provided with a plurality of second connecting pieces 5a, an explosion-proof structure and an auxiliary functional structure can be installed in the first channel and the second channel, respectively. The first connecting member 4a is distributed circumferentially along the side wall of the first chamber and the side wall of the second chamber, and the second connecting member 5a is distributed circumferentially along the top wall of the first chamber and the top wall of the second chamber. Preferably, the first connecting member 4a and the second connecting member 5a include at least two relatively arranged ones, which can be set to 2, 3 or 4, etc., so that the explosion-proof structure and the auxiliary function structure are reliably connected to the installation box 100.

[0039] When the explosion-proof valve 200 and the air pressure regulating valve 300 are fixed by the first buckle 201, when the distance between the first buckle 201 of the two and the inner side of the end cover 202 is the same, the end cover 202 and the first buckle 201 of the explosion-proof valve 200 and the air pressure regulating valve 300 can be respectively clamped on both sides of the end plate 2. Generally, the height of the air pressure regulating valve 300 is lower than the explosion-proof valve 200, and the distance between the first buckle 201 of the explosion-proof valve 200 and the inner side of the end cover 202 is greater than the distance between the first buckle 201 of the air pressure regulating valve 300 and the inner side of the end cover 202. In order to adapt the height of the air pressure regulating valve 300, refer to Figure 2 As shown, a first countersunk structure 6 can be provided at one end of the first through hole 211 facing the first chamber and / or one end of the second through hole 221 facing the second chamber where the air pressure regulating valve 300 is installed. During assembly, the first buckle 201 of the air pressure regulating valve 300 can be clamped to the low step surface of the first countersunk structure 6, and the first buckle 201 of the explosion-proof valve 200 can be clamped to the high step surface of the first countersunk structure 6.

[0040] In some embodiments, the first chamber sidewall and the second chamber sidewall are both provided with a plurality of first connectors 4a, the first chamber top wall and the second chamber top wall are both provided with a plurality of second connectors 5a, the first through hole 211 and the second through hole 221 are the same, and the first chamber and the second chamber are the same, so that the first channel and the second channel are the same, and both can be installed with explosion-proof structures and auxiliary function structures. The first through hole 211 and the second through hole 221 are the same, including that the aperture and depth of the first through hole 211 are the same as those of the second through hole 221. When the first through hole 211 and the second through hole 221 are both provided with a first countersunk structure 6, the first countersunk structure 6 of the first through hole 211 and the first countersunk structure 6 of the second through hole 221 are the same. The first chamber and the second chamber are the same, including that the length, width and depth of the first chamber and the second chamber are the same. The first channel and the second channel can be installed with an explosion-proof structure, and can also be installed with an auxiliary function structure. The installation box 100 can only be equipped with basic functional modules. For example, the first through hole 211 and the second through hole 221 can both be equipped with explosion-proof valves 200 to increase the exhaust capacity when the battery is in thermal runaway; the first through hole 211 and the second through hole 221 can also be equipped with air pressure regulating valves 300 to improve the air pressure regulation and balancing capacity; the first through hole 211 and the second through hole 221 can also be equipped with explosion-proof valves 200 and air pressure regulating valves 300, respectively, to integrate explosion-proof and balanced air pressure functions. The first chamber and the second chamber can also be equipped with fire protection modules 400, moisture absorption modules 500 or alarm modules 600, respectively. This allows the installation box 100 to be modularly selected according to the configuration, with more optional modes, flexible selection, and wider installation adaptability.

[0041] Preferably, the first connector 4a is a snap connector or a plug connector; the second connector 5a is a snap connector, a plug connector or a screw connector. Specifically, the snap connector can be set as one of a snap buckle, a slot or a hole, the plug connector can be set as one of a plug strip or a slot, and the screw connector can be set as a threaded blind hole. When the plug connector is a plug strip or a slot, the matching plug strip and slot are connected by interference fit. For example, the first connector 4a is set as a snap buckle, and a matching slot can be set on the side wall of the fireproof module 400, and the second connector 5a is set as a hole, and a matching snap buckle can be set on the moisture absorption module 500.

[0042] The explosion-proof valve 200 and the air pressure regulating valve 300 are mostly cylindrical in shape as a whole. The first through hole 211 and the second through hole 221 can be set as circular holes, which are compatible with the explosion-proof valve 200 and the air pressure regulating valve 300 and are used to accommodate the explosion-proof valve 200 and the air pressure regulating valve 300. The first chamber and the second chamber are used to accommodate the fireproof module 400 and the moisture absorption module 500. The first chamber and the second chamber can be set as rectangular chambers. Accordingly, the fireproof module 400 and the moisture absorption module 500 are set into a flat structure, which can increase the area while reducing the thickness, improve the fireproof effect of the fireproof module 400 and the moisture absorption effect of the moisture absorption module 500, and reduce the longitudinal length of the installation box 100 from the inside to the outside of the battery pack, saving the longitudinal space occupied by the battery pack. It can be understood that the rectangular hole includes a rectangular hole, a square hole, and an oblong hole.

[0043] Preferably, reference Figure 2 As shown, when the explosion-proof valve 200 and the air pressure regulating valve 300 are installed in the first through hole 211 and the second through hole 221, a first annular groove 212 coaxial with the first through hole 211 is provided at the end of the first plate 21 away from the first chamber, and a second annular groove 222 coaxial with the second through hole 221 is provided at the end of the second plate 22 away from the second chamber. Sealing rings can be installed in the first annular groove 212 and the second annular groove 222, and the end cover 202 of the explosion-proof valve 200 and the end cover 202 of the air pressure regulating valve 300 are respectively sealed to the end plate 2 through the sealing rings. The end plate 2 is circumferentially provided with a first flange 23, and a third annular groove 231 is circumferentially provided on a side of the first flange 23 close to the side plate 1; the side plate 1 is circumferentially provided with a second flange 11 at one end away from the end plate 2, and a fourth annular groove 111 is circumferentially provided on a side of the second flange 11 away from the side plate 1. Reference Figure 2 and Figure 4 As shown, the battery housing 700 is provided with a receiving hole. When the installation box 100 is assembled on the battery housing 700, a fourth through hole 232 is provided on the first flange 23, and a second threaded hole or a preset nut is provided on the battery housing 700. The installation box 100 is connected to the outer side of the battery housing 700 by screws, and the installation box 100 is installed in the receiving hole. The third annular groove 231 and the fourth annular groove 111 are used to install a sealing ring. The sealing ring installed in the third annular groove 231 can seal the first flange 23 and the outer side of the battery housing 700, and the sealing ring installed in the fourth annular groove 111 can seal the second flange 11 and the battery housing 700 at the inner end of the receiving cavity, so as to seal the installation box 100 with the battery housing 700. In order to make the surface of the end plate 2 of the installation box 100 smooth and beautiful after the explosion-proof valve 200 and the air pressure regulating valve 300 are installed, the end of the first through hole 211 away from the first chamber and the end of the second through hole 221 away from the second chamber can also be set as a second countersunk structure 7. The installation box 100 can be integrally injection molded, and is easy to process.

[0044] The utility model also provides a battery explosion-proof balancing device, including the above-mentioned explosion-proof balancing valve installation box 100, and also including a first module and a second module, wherein the first module and the second module are detachably arranged in the first through hole 211 and the second through hole 221 respectively; the first module is an explosion-proof valve 200 or an air pressure regulating valve 300; the second module is an explosion-proof valve 200 or an air pressure regulating valve 300. The first through hole 211 and the second through hole 221 can both be equipped with an explosion-proof valve 200, or can both be equipped with an air pressure regulating valve 300, or can respectively be equipped with an explosion-proof valve 200 and an air pressure regulating valve 300. The explosion-proof exhaust channel of the explosion-proof valve 200 and the balanced air pressure channel of the air pressure regulating valve 300 are set as two separate channels. Compared with the explosion-proof valve 200 with an air pressure balancing function set in one body, the explosion-proof valve 200 and the air pressure regulating valve 300 have simpler structures.

[0045] The explosion-proof balancing device further includes at least one of a fireproof module 400, a moisture absorption module 500 and an alarm module 600. The side wall of the fireproof module 400 is provided with a third connecting member 4b adapted to the first connecting member 4a; the side wall of the moisture absorption module 500 and the side wall of the alarm module 600 are both provided with a fourth connecting member 5b adapted to the second connecting member 5a. Preferably, the side wall of the moisture absorption module 500 is also provided with a second connecting member 5a for matching and connecting with the fourth connecting member 5b provided on the side wall of the alarm module 600. Figure 6 As shown, the fire protection module 400 is connected with the first connection member 4a through the third connection member 4b, and is detachably fixed in the chamber corresponding to the explosion-proof valve 200. Figure 8 and Fig. 9 As shown, when only the moisture absorption module 500 or the alarm module 600 is provided, the fourth connecting member 5b provided on the moisture absorption module 500 and the fourth connecting member 5b provided on the alarm module 600 can be connected with the second connecting member 5a provided on the end plate 2, so that the moisture absorption module 500 or the alarm module 600 can be directly connected to the end plate 2 in a detachable manner. When the moisture absorption module 500 and the alarm module 600 are provided at the same time, the fourth connecting member 5b provided on the moisture absorption module 500 is connected with the second connecting member 5a provided on the end plate 2, so that the moisture absorption module 500 can be connected to the end plate 2 in a detachable manner, and the fourth connecting member 5b provided on the alarm module 600 is connected with the second connecting member 5a provided on the moisture absorption module 500, so that the alarm module 600 can be connected to the moisture absorption module 500 in a detachable manner.

[0046] In some embodiments, reference Figure 7As shown, the air pressure regulating valve 300 includes a balancing module; or the air pressure regulating valve 300 includes a balancing module and a moisture-proof module detachably arranged on the balancing module, so that the functions of the air pressure regulating valve 300 can be modularly selected. Preferably, the moisture-proof module and the balancing module can also be detachably connected by a clamping piece or a plug-in piece.

[0047] In some embodiments, the alarm module 600 includes a housing 601, a chip and a sensor probe. The chip is arranged in the housing 601, and the chip is electrically connected with a transmission interface 602. The transmission interface 602 is arranged on the side of the housing 601 facing the battery cell, which is used to electrically connect the battery manager and is convenient to connect with the whole package wiring harness. The sensor probe includes a first sensor, which is arranged in the explosion-proof valve 200. The housing 601 is provided with a probe interface electrically connected to the chip, which is used to electrically connect the first sensor. Specifically, the first sensor includes a first connecting line. When the first connecting line interface is adapted to the probe interface, the first connecting line can be directly connected to the probe interface. When the first connecting line interface is not adapted to the probe interface, the alarm module 600 also includes a second connecting line, one interface of the second connecting line is adapted to the probe interface, and the other interface is adapted to the interface of the first connecting line. The interface of the first connecting line and the probe interface can be connected through the second connecting line, so that the first sensor is electrically connected to the chip. The partition 3 is provided with a fifth through hole 32 for the first connecting line to pass through, so that the circuit is arranged in the installation box 100.

[0048] The sensor probe may also include a second sensor disposed in the housing 601. A vent 603 is disposed on the side of the housing 601 facing the battery cell. The second sensor is close to the vent 603, so that the second sensor is more sensitive and can better sense the trigger signal. The second sensor is integrated in the housing 601. When different second sensors are selected, the alarm module 600 can be installed as a whole. The first sensor or the second sensor can be set separately, or the first sensor and the second sensor can be set at the same time to improve the reliability of monitoring.

[0049] The first sensor includes a displacement sensor or a circuit switch, etc. When heat diffusion occurs, the explosion-proof valve 200 opens to generate a displacement triggering displacement sensor or a circuit on-off signal; the second sensor includes a pressure sensor, a smoke sensor or a gas composition sensor, etc., to detect the gas in the battery pack, and the first sensor and the second sensor send the collected signals to the chip of the alarm module 600.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An explosion-proof balancing valve installation box (100), characterized in that: The invention comprises a side plate (1), an end plate (2) and a partition plate (3), wherein the side plate (1) encloses a receiving cavity with openings at both ends, and the receiving cavity forms a first cavity and a second cavity through the partition plate (3); the end plate (2) is arranged at one end of the receiving cavity, and the end plate (2) comprises a first plate (21) covering the first cavity and a second plate (22) covering the second cavity; the first plate (21) is provided with a first through hole (211) penetrating the first cavity, and the second plate (22) is provided with a second through hole (221) penetrating the second cavity; at least one of the side wall of the first cavity and the side wall of the second cavity is provided with a plurality of first connecting members (4a); and / or at least one of the top wall of the first cavity and the top wall of the second cavity is provided with a plurality of second connecting members (5a).

2. The explosion-proof balancing valve installation box (100) according to claim 1, characterized in that: One end of the first through hole (211) facing the first chamber and / or one end of the second through hole (221) facing the second chamber is provided with a first countersunk structure (6).

3. The explosion-proof balancing valve installation box (100) according to claim 1 or 2, characterized in that: The first chamber side wall and the second chamber side wall are both provided with a plurality of first connecting pieces (4a), the first chamber top wall and the second chamber top wall are both provided with a plurality of second connecting pieces (5a), the first through hole (211) and the second through hole (221) are the same, and the first chamber and the second chamber are the same.

4. The explosion-proof balancing valve installation box (100) according to claim 1, characterized in that: The first connecting piece (4a) is a snap-on connecting piece or a plug-in connecting piece; the second connecting piece (5a) is a snap-on connecting piece, a plug-in connecting piece or a screw-on connecting piece.

5. The explosion-proof balancing valve installation box (100) according to claim 1, characterized in that: The first through hole (211) and the second through hole (221) are circular holes, and the first chamber and the second chamber are rectangular chambers.

6. The explosion-proof balancing valve installation box (100) according to claim 1, characterized in that: A first annular groove (212) coaxial with the first through hole (211) is provided at one end of the first plate (21) away from the first chamber, and a second annular groove (222) coaxial with the second through hole (221) is provided at one end of the second plate (22) away from the second chamber; a first flange (23) is circumferentially provided on the end plate (2), and a third annular groove (231) is circumferentially provided on a side of the first flange (23) close to the side plate (1); a second flange (11) is circumferentially provided on one end of the side plate (1) away from the end plate (2), and a fourth annular groove (111) is circumferentially provided on a side of the second flange (11) away from the side plate (1).

7. A battery explosion-proof balancing device, characterized in that: The invention comprises an explosion-proof balancing valve installation box (100) as claimed in any one of claims 1 to 6, and further comprises a first module and a second module, wherein the first module and the second module are detachably arranged at a first through hole (211) and a second through hole (221), respectively; the first module is an explosion-proof valve (200) or an air pressure regulating valve (300); the second module is an explosion-proof valve (200) or an air pressure regulating valve (300).

8. The battery explosion-proof balancing device according to claim 7, characterized in that: The explosion-proof balancing device further comprises at least one of a fireproof module (400), a moisture absorption module (500) and an alarm module (600); the side wall of the fireproof module (400) is provided with a third connecting piece (4b) adapted to the first connecting piece (4a); and the side wall of the moisture absorption module (500) and the side wall of the alarm module (600) are both provided with a fourth connecting piece (5b) adapted to the second connecting piece (5a).

9. The battery explosion-proof balancing device according to claim 8, characterized in that: The side wall of the moisture absorption module (500) is also provided with a second connecting piece (5a) for cooperating with a fourth connecting piece (5b) provided on the side wall of the alarm module (600).

10. The battery explosion-proof balancing device according to claim 7, characterized in that: The air pressure regulating valve (300) comprises a balancing module; or the air pressure regulating valve (300) comprises a balancing module and a moisture-proof module detachably arranged on the balancing module.

11. The battery explosion-proof balancing device according to claim 8, characterized in that: The alarm module (600) comprises a housing (601), a chip and a sensor probe; the chip is arranged in the housing (601), and the chip is electrically connected to a transmission interface (602); the transmission interface (602) is arranged on a side of the housing (601) facing the battery cell, and is used to electrically connect to a battery manager; The sensor probe comprises a first sensor, the first sensor is arranged on the explosion-proof valve (200), the housing (601) is provided with a probe interface electrically connected to the chip, and is used to electrically connect to the first sensor; and / or the sensor probe comprises a second sensor arranged in the housing (601), a vent (603) is provided on a side of the housing (601) facing the battery cell, and the second sensor is close to the vent (603).

12. The battery explosion-proof balancing device according to claim 11, characterized in that: The first sensor comprises a first connecting line, and the alarm module (600) comprises a second connecting line, wherein one interface of the second connecting line is adapted to the probe interface, and the other interface of the second connecting line is adapted to the interface of the first connecting line.

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