TWI758846B - Supporting base and pressure relief valve - Google Patents

Abstract

A supporting base and pressure relief valve, where supporting base is configured to accommodate battery and control circuit board an includes casing and pressure relief valve. Pressure relief valve includes body, restoring component and plug. First cover plate and first side wall of body together form opening. First side wall includes relief hole. Vent hole of casing is connected to opening. Relief hole is connected to opening. Restoring component is connected to opening. Second side wall and second cover plate of plug together form a recession that is connected to accommodation space via vent hole. Second cover plate is movably disposed in opening via restoring component. When plug is in initial position, second side wall covers relief hole to disconnect relief hole and accommodation space. When plug is pressed to be in relief position, second side wall is moved away from relief hole so that relief hole is connected to accommodation space via vent hole.

Description

Bearing seat and pressure relief valve

The present invention relates to a bearing seat and a pressure relief valve, in particular to a bearing seat and a pressure relief valve including a pressure relief hole.

Generally, an electric vehicle or an electric scooter includes a battery pack to provide the electric power required to drive the engine. Of course, when the battery pack is subjected to vibration, shock or overcharge, overdischarge and internal short circuit, the battery pack may explode due to increased temperature.

When the battery pack explodes, it can damage the electric vehicle or other components in the electric scooter, and even cause injury to the driver. Therefore, a valve body is usually provided on the battery pack to release the pressure generated by the explosion of the battery pack. However, when the battery pack explodes, airflow will be generated in different directions, and the traditional valve system uses a protruding surface to receive the airflow generated by the battery pack explosion. Therefore, the traditional valve body is often unable to function properly due to uneven force. operating situation.

The present invention is to provide a bearing seat and a pressure relief valve, so that the piston head of the pressure relief valve can evenly receive air flow from different directions to ensure the normal operation of the pressure relief valve.

The bearing seat disclosed in an embodiment of the present invention is used for accommodating a battery and a control circuit board, and includes a casing and a pressure relief valve. The casing includes an accommodating space and an exhaust hole. The exhaust hole is communicated with the accommodating space. The battery and the control circuit board are accommodated in the accommodating space. The pressure relief valve includes a cylinder, a reset piece and a piston head. The cylinder includes a first cover plate and a first side wall. The first side wall protrudes from the first cover plate and is fixed to the casing. A slot is formed around the first cover plate and the first side wall together. The first sidewall includes a pressure relief hole. The exhaust hole of the housing communicates with the slot. The pressure relief hole communicates with the slot. The reset piece is connected to the slot. The piston head includes a second cover plate and a second side wall. The second side wall protrudes from the second cover plate and abuts against the first side wall of the cylinder. The second side wall and the second cover plate together form a groove. The groove is communicated with the accommodating space through the slot and the exhaust hole. The second cover plate is movably accommodated in the slot through the reset piece, so that the piston head includes an initial position and a pressure relief position. When the piston head is at the initial position, the second sidewall of the piston head shields the pressure relief hole of the first sidewall so that the pressure relief hole and the accommodating space are not communicated with each other. When the piston head is in the pressure relief position under pressure, the second side wall of the piston head is separated from the pressure relief hole of the first side wall, so that the pressure relief hole communicates with the accommodating space through the exhaust hole, and the reset piece is used to make The piston head returns to the original position from the pressure relief position.

The pressure relief valve disclosed in another embodiment of the present invention is used for fixing to a casing. The casing includes an accommodating space. The pressure relief valve includes a cylinder, a reset piece and a piston head. The cylinder includes a first cover plate and a first side wall. The first side wall protrudes from the first cover plate. A slot is formed around the first cover plate and the first side wall together. The first sidewall includes a pressure relief hole. The pressure relief hole communicates with the slot. The reset piece is connected to the slot. The piston head includes a second cover plate and a second side wall. The second side wall protrudes from the second cover plate and abuts against the first side wall. The second side wall and the second cover plate together form a groove. The groove is used to communicate with the accommodating space of the casing. The second cover plate is movably accommodated in the slot through the reset piece, so that the piston head includes an initial position and a pressure relief position. When the piston head is at the initial position, the second sidewall of the piston head shields the pressure relief hole of the first sidewall so that the pressure relief hole and the accommodating space of the housing are not communicated with each other. When the piston head is pressurized and located at the pressure relief position, the second side wall of the piston head is separated from the pressure relief hole of the first side wall, so that the pressure relief hole communicates with the accommodating space of the housing.

According to the bearing seat and the pressure relief valve disclosed in the above-mentioned embodiments, since the second sidewall and the second cover plate of the piston head together surround the groove and the second sidewall abuts against the first sidewall, the battery will explode when the battery explodes. When the explosive airflow flows into the groove, it can push against the second cover plate of the piston head evenly. Moreover, even if the explosive air pushes against the second side wall of the piston head, the second side wall will not be inclined or skewed relative to the cylinder block because it abuts against the first side wall of the cylinder block. In this way, the piston head of the pressure relief valve can evenly receive the explosion airflow from different directions, thereby ensuring that the pressure relief valve can operate normally when the battery explodes and effectively release the pressure generated by the battery explosion.

The detailed features and advantages of the embodiments of the present invention are described in detail below in the embodiments, and the contents are sufficient to enable any person with ordinary knowledge in the art to understand the technical contents of the embodiments of the present invention and implement them accordingly, and according to the disclosure in this specification Any person with ordinary knowledge in the art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention in any viewpoint.

See Figures 1 through 3. FIG. 1 is a perspective view of a battery, a control circuit board, and a carrier according to an embodiment of the present invention. FIG. 2 is a schematic side cross-sectional view of the battery, the control circuit board, and the carrier in FIG. 1 . FIG. 3 is a partial enlarged view of a schematic side sectional view of the piston head of the bearing seat in FIG. 1 when it is at an initial position.

In this embodiment, the carrier 10 is used for accommodating a battery 20 and a control circuit board 30 and includes a casing 100 and a pressure relief valve 200 . The battery 20 is, for example, a lithium battery. The carrier 10 is used, for example, to be arranged in an electric vehicle and, for example, to be fixed to the frame of the vehicle.

In this embodiment, the casing 100 includes an accommodating space 101 and an exhaust hole 102 . Moreover, in this embodiment, the accommodating space 101 includes a first accommodating space 103 and a second accommodating space 104 . The first accommodating space 103 and the second accommodating space 104 are side by side with each other. The exhaust hole 102 is communicated with the first accommodating space 103 . The battery 20 is accommodated in the first accommodating space 103 . The control circuit board 30 is accommodated in the second accommodating space 104 . In other embodiments, if the second accommodating space communicates with the first accommodating space, the exhaust hole may also communicate with the second accommodating space.

In this embodiment, the pressure relief valve 200 includes a cylinder 201 , a reset member 202 , a piston head 203 , a first sealing ring 204 , a second sealing ring 205 and a third sealing ring 206 . In this embodiment, the cylinder block 201 includes a first cover plate 2010 , a first side wall 2011 and a blocking convex plate 2012 . The first side wall 2011 protrudes from the first cover plate 2010 and is fixed to the casing 100 . The first cover plate 2010 and the first side wall 2011 together surround a slot 2013 . The exhaust hole 102 of the housing 100 communicates with the slot 2013 . In addition, the first sidewall 2011 includes three pressure relief holes 2014 , and these pressure relief holes 2014 communicate with the slot 2013 . In addition, in this embodiment, the pressure relief valve 200 further includes a plurality of screws 207 . The first side wall 2011 is fixed to the casing 100 through the screws 207, but not limited thereto. In other embodiments, the first side wall can also be fixed to the housing through rivets or other types of fasteners. The blocking protruding plate 2012 protrudes from the first sidewall 2011 and is located in the slot 2013 .

In this embodiment, the restoring member 202 is, for example, a compression spring. The reset piece 202 is located in the slot 2013 , and one end of the reset piece 202 is fixed to the first cover plate 2010 of the cylinder block 201 .

In this embodiment, the piston head 203 includes a second cover plate 2030 and a second sidewall 2031 . The second side wall 2031 protrudes from the second cover plate 2030 and abuts against the first side wall 2011 of the cylinder block 201 . The second side wall 2031 and the second cover plate 2030 together define a groove 2032 . The groove 2032 communicates with the first accommodating space 103 through the exhaust hole 102 . In addition, the second cover plate 2030 includes a groove bottom surface 2033 . The groove bottom surface 2033 is located in the groove 2032 . In this embodiment, the groove bottom surface 2033 faces the exhaust hole 102 of the casing 100 . The other end of the reset member 202 is fixed to the second cover plate 2030 of the piston head 203 . That is to say, opposite ends of the reset member 202 are respectively fixed to the first cover plate 2010 of the cylinder body 201 and the second cover plate 2030 of the piston head 203 , so that the second cover plate 2030 can be movably accommodated through the reset member 202 . The slot 2013 further enables the piston head 203 to include an initial position and a pressure relief position. In addition, in this embodiment, the blocking protruding plate 2012 is blocked on the side of the second side wall 2031 away from the second cover plate 2030 . However, in other embodiments, the cylinder block may not include a blocking protrusion plate, but instead a locking groove is provided on the first side wall and a locking protrusion is provided on the second side wall to stop the second side wall.

In this embodiment, the first sealing ring 204 is disposed on the side of the blocking convex plate 2012 close to the second cover plate 2030 of the piston head 203 .

In this embodiment, the second sealing ring 205 is sandwiched between the first sidewall 2011 of the cylinder block 201 and the casing 100 and separated from the slot 2013 . In this way, the second sealing ring 205 can enhance the tightness between the first sidewall 2011 of the cylinder block 201 and the casing 100 . In other embodiments, when the tightness between the first sidewall and the housing has met requirements, the pressure relief valve does not need to include a second sealing ring.

In this embodiment, the third sealing ring 206 is sandwiched between the first sidewall 2011 of the cylinder block 201 and the second sidewall 2031 of the piston head 203 and separated from the pressure relief holes 2014 of the first sidewall 2011 . In this way, the third sealing ring 206 can enhance the tightness between the first sidewall 2011 of the cylinder block 201 and the second sidewall 2031 of the piston head 203 . In other embodiments, when the tightness between the first sidewall and the second sidewall has met requirements, the pressure relief valve does not need to include a third sealing ring.

As shown in FIG. 3 , when the battery 20 operates normally, the piston head 203 is pushed by the reset member 202 to maintain the initial position. When the piston head 203 is at the initial position, the second sidewall 2031 of the piston head 203 will shield the pressure relief holes 2014 of the first sidewall 2011 so that the pressure relief holes 2014 and the first accommodating space 103 are not communicated with each other. In addition, when the piston head 203 is at the initial position, the first sealing ring 204 will be sandwiched between the stopper convex plate 2012 and the second side wall 2031 of the piston head 203, and the stopper convex plate 2012 and the piston head 203 will be raised. The tightness between the second side walls 2031 . In other embodiments, when the tightness between the blocking protruding plate and the second sidewall can meet the requirements, the pressure relief valve does not need to include the first sealing ring.

See Figure 4. FIG. 4 is a partial enlarged view of a schematic side sectional view of the piston head of the bearing seat in FIG. 1 when the piston head is at the pressure relief position. As shown in FIG. 4 , when the battery 20 explodes to generate a first explosive airflow F1 and a second explosive airflow F2, the first explosive airflow F1 and the second explosive airflow F2 will flow from the first accommodating space 103 for accommodating the battery 20 It flows into the groove 2032 of the piston head 203 through the exhaust hole 102 and pushes against the piston head 203 so that the piston head 203 overcomes the elastic force of the reset member 202 and moves along a pressure relief direction D1 in the groove 2013 to the pressure relief position . Specifically, the first explosive airflow F1 flows to the groove bottom surface 2033 of the second cover plate 2030 of the piston head 203 , and the second explosive airflow F2 flows to the second side plate 2031 of the piston head 203 . When the piston head 203 is at the pressure relief position, the second side wall 2031 of the piston head 203 is separated from the pressure relief holes 2014 of the first side wall 2011 of the cylinder block 201 so that the pressure relief holes 2014 communicate with each other through the exhaust hole 102 in the first accommodating space 103 . In this way, the first explosive airflow F1 and the second explosive airflow F2 flowing out from the first accommodating space 103 for accommodating the battery 20 can be discharged to the outside from the pressure relief holes 2014 through the exhaust hole 102 , thereby lowering the bearing seat 10 pressure in. Since the first sidewall 2011 in this embodiment includes three pressure relief holes 2014 , the first explosion air F1 and the second explosion air F2 are uniformly discharged from these pressure relief holes 2014 to the outside. It should be noted that, in other embodiments, as long as the explosive airflow can be discharged smoothly, the first side wall may only include a single pressure relief hole, two pressure relief holes, or more than four pressure relief holes. In addition, when the piston head 203 is in the pressure relief position, the reset member 202 is compressed. When the battery 20 stops discharging the first explosive airflow F1 and the second explosive airflow F2, the compressed reset member 202 will release elastic potential energy to reset the piston head 203 from the pressure relief position to the original position.

Since the groove bottom surface 2033 of the groove 2032 in the second cover plate 2030 of the piston head 203 faces the exhaust hole 102 , the first explosive airflow F1 will push the piston head evenly when it flows into the groove 2032 of the piston head 203 203 of the second cover plate 2030 . In addition, even if the second explosive airflow F2 pushes against the second sidewall 2031 of the piston head 203 , the second sidewall 2031 will be supported by the first sidewall 2011 because it abuts against the first sidewall 2011 of the cylinder block 201 . In this way, the second side wall 2031 will not be inclined or skewed relative to the cylinder block 201 . It should be noted that, in other embodiments, as long as the second cover plate of the piston head can be evenly pushed against by the explosive airflow, the bottom surface of the groove of the second cover plate does not need to face the exhaust hole.

In addition, the present invention is not limited to the form of the reset member. Please refer to FIG. 5 . FIG. 5 is a partial enlarged view of a side cross-sectional schematic view of the piston head of the bearing seat at the initial position according to another embodiment of the present invention. In this embodiment, the reset member 202a is, for example, a fluid supply unit. The reset member 202a is used for supplying a fluid into the slot 2013a along a supply direction D2 and making the fluid between the first cover plate 2010a of the cylinder block 201a and the second cover plate 2030a of the piston head 203a, so as to make the fluid The second cover plate 2030a pushed against the piston head 203a is close to one side of the first cover plate 2010a of the cylinder block 201a.

In addition, in an embodiment of the present invention, the technology of the present invention can be applied to in-vehicle devices, such as self-driving cars, electric cars, or semi-self-driving cars.

According to the bearing seat and the pressure relief valve disclosed in the above-mentioned embodiments, since the second sidewall and the second cover plate of the piston head together surround the groove and the second sidewall abuts against the first sidewall, the battery will explode when the battery explodes. When the explosive airflow flows into the groove, it can push against the second cover plate of the piston head evenly. Moreover, even if the explosive air pushes against the second side wall of the piston head, the second side wall will not be inclined or skewed relative to the cylinder block because it abuts against the first side wall of the cylinder block. In this way, the piston head of the pressure relief valve can evenly receive the explosion airflow from different directions, thereby ensuring that the pressure relief valve can operate normally when the battery explodes and effectively release the pressure generated by the battery explosion.

Although the present invention is disclosed above by the aforementioned embodiments, it is not intended to limit the present invention. Anyone who is familiar with the similar arts can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, this The scope of patent protection of the invention shall be determined by the scope of the patent application attached to this specification.

10…bearing seat 100…shell 101…Accommodating space 102…Vent hole 103…The first accommodation space 104…Second accommodation space 200…Relief valve 201…Cylinder block 2010…First cover 2011…First Side Wall 2012…stop tabs 2013…Slotted 2014…Relief hole 202...Reset 203…Piston head 2030…Second cover 2031…Second Side Wall 2032…groove 2033…groove bottom 204…First seal ring 205…Second sealing ring 206…Third sealing ring 207…Screw 20…battery 30…Control circuit board 201a…Cylinder block 2010a…First cover 2013a…Slotted 202a…Reset 203a…Piston head 2030a…Second cover F1…First blast stream F2…Second blast flow D1…Relief direction D2…supply direction

FIG. 1 is a perspective view of a battery, a control circuit board, and a carrier according to an embodiment of the present invention. FIG. 2 is a schematic side cross-sectional view of the battery, the control circuit board, and the carrier in FIG. 1 . FIG. 3 is a partial enlarged view of a schematic side sectional view of the piston head of the bearing seat in FIG. 1 when it is at an initial position. FIG. 4 is a partial enlarged view of a schematic side sectional view of the piston head of the bearing seat in FIG. 1 when the piston head is at the pressure relief position. 5 is a partial enlarged view of a side cross-sectional schematic view of the piston head of the bearing seat at the initial position according to another embodiment of the present invention.

10…bearing seat 100…shell 200…Relief valve 2014…Relief hole 207…Screw 20…battery 30…Control circuit board

Claims (8)

A bearing seat is used for accommodating a battery and a control circuit board, the bearing seat comprises: a shell, the shell includes an accommodating space and an exhaust hole, the exhaust hole is communicated with the accommodating space, The battery and the control circuit board are accommodated in the accommodating space; and a pressure relief valve includes: a cylinder body, the cylinder body includes a first cover plate and a first side wall, The first side wall protrudes from the first cover plate and is fixed to the casing. The first cover plate and the first side wall together form a slot, the first side wall includes a pressure relief hole, the The exhaust hole of the casing is communicated with the slot, the pressure relief hole is communicated with the slot, wherein the cylinder further includes a stopper convex plate, the stopper convex plate protrudes from the first side wall and is located at the In the slot, when the piston head is at the initial position, the blocking convex plate stops on the side of the second sidewall of the piston head away from the second cover plate; a reset piece is connected to the reset piece in the slot; and a piston head, the piston head includes a second cover plate and a second side wall, the second side wall protrudes from the second cover plate and abuts against the first side of the cylinder The wall, the second side wall and the second cover plate together surround a groove, the groove communicates with the accommodating space through the exhaust hole, and the second cover plate is movably accommodated in the accommodating space through the reset piece Slotted so that the piston head includes an initial position and a pressure relief position; wherein, when the piston head is at the initial position, the second sidewall of the piston head shields the pressure relief hole of the first sidewall to prevent so that the pressure relief hole and the accommodating space are mutually No communication, when the piston head is pressurized and located at the pressure relief position, the second sidewall of the piston head is separated from the pressure relief hole of the first sidewall so that the pressure relief hole communicates through the exhaust hole in the accommodating space, and the reset piece is used to reset the piston head from the pressure relief position back to the initial position. The bearing seat of claim 1, wherein the restoring member is a compression spring, and opposite ends of the restoring member are respectively fixed to the first cover plate of the cylinder body and the second cover plate of the piston head. The bearing seat of claim 1, wherein the reset member is a fluid supply unit, and the reset member is used for supplying a fluid into the slot and making the fluid between the first cover plate of the cylinder and the between the second cover plate of the piston head, so that the fluid pushes the second cover plate of the piston head close to one side of the first cover plate of the cylinder. The bearing seat of claim 1, wherein the second cover plate of the piston head includes a groove bottom surface, and the groove bottom surface is located in the groove and faces the exhaust hole of the housing. The bearing seat according to claim 1, wherein the pressure relief valve further comprises a sealing ring, and the sealing ring is disposed on the side of the stopper convex plate close to the second cover plate, when the piston head is at the initial position , the sealing ring is sandwiched between the blocking convex plate and the second side wall of the piston head. The bearing seat of claim 1, wherein the pressure relief valve further comprises a sealing ring, and the sealing ring is sandwiched between the first side wall of the cylinder block and the housing and separated from the slot. The bearing seat of claim 1, wherein the pressure relief valve further comprises a sealing ring, the sealing ring is sandwiched between the first side wall of the cylinder body and the second side wall of the piston head and separated the pressure relief hole in the first sidewall. The carrier according to claim 1, wherein the accommodating space of the housing comprises a first accommodating space and a second accommodating space, the first accommodating space and the second accommodating space are side by side, The first accommodating space is used for accommodating the battery, the first accommodating space is communicated with the exhaust hole, and the second accommodating space is used for accommodating the control circuit board.

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