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CN-122025989-A - Valve, energy storage system and electric equipment

CN122025989ACN 122025989 ACN122025989 ACN 122025989ACN-122025989-A

Abstract

The application discloses a valve, an energy storage system and electric equipment, wherein the valve comprises a valve cover, a conducting piece and a conducting piece, wherein the valve cover is configured to enable the valve to have a first valve opening, the conducting piece and the valve cover form an insulating whole, and the conducting piece is located at a disconnection position under the action of the force provided by the valve cover under the condition that the valve is located at the first valve opening, so that electric energy interaction between a slave control module and a battery is disconnected. By providing a valve between at least one slave module and a corresponding battery, the valve is configured to have a first valve opening. On the one hand, under the condition that the valve is at the first valve opening, the electric energy interaction between at least one slave control module and the corresponding battery is disconnected, so that the master control module can be awakened. On the other hand, through mechanical valve, control from the accuse module and the electric energy interaction between the battery that corresponds, need not to set up alone and discern the sensor of valve state and carry out the transmission of sensor signal, effectively reduced the structural complexity of storage system.

Inventors

  • WANG XIAOBIN
  • GUO LONGQING
  • FENG YANQIANG
  • XU YUHONG

Assignees

  • 惠州亿纬锂能股份有限公司

Dates

Publication Date
20260512
Application Date
20251231

Claims (19)

  1. 1. A valve, wherein the valve is connected between a slave module and a battery; the valve comprises: a valve cover configured to provide the valve with a first valve opening; A conductive member configured to form an insulating integral body with the valve cover; Under the condition that the valve is at the first valve opening, the conducting piece is located at the disconnection position under the action of the action force provided by the valve cover, so that the electric energy interaction between the slave control module and the battery is disconnected.
  2. 2. A valve as claimed in claim 1, wherein, The valve further comprises: A valve stem located between the valve cap and the conductive member; The insulating connecting piece is positioned between the valve rod and the conductive piece and is used for insulating the conductive piece, the valve rod and the valve cover; wherein the valve stem and the insulating connector are configured to move in synchronism with the conductive member in a first direction under the force of the force provided by the valve cap.
  3. 3. A valve as claimed in claim 2, wherein, The valve further comprises: A first externally connected conductive member configured to electrically connect the slave module with one of the batteries; A second externally-connected conductive member configured to electrically connect the slave module with the other one of the batteries; Wherein, when the valve is at the opening of the first valve, the conductive member is at the disconnection position to be disconnected with the first external conductive member and the second external conductive member respectively; When the valve is at the second valve opening, the conducting piece is at a conducting position so as to be connected with the first external conducting piece and the second external conducting piece respectively; the first valve opening is greater than the second valve opening.
  4. 4. A valve according to claim 3, wherein, The insulating connector has: a travel path for receiving the conductive member; The projection of the conductive piece on the projection surface along the projection surface vertical to the second direction is overlapped with the projection contour of the wall surface of the piece passage defining the insulating connecting piece on the projection surface; the first direction intersects the second direction.
  5. 5. The valve of claim 4, wherein the valve is configured to, The runner channel includes: A first sub-trace channel for receiving a portion of the conductive element; two second sub-runner channels for receiving the remainder of the conductive member; The first sub-travelling channel is communicated between the two second sub-travelling channels to form a continuous travelling channel, so that the conductive piece is continuously arranged in the travelling channel.
  6. 6. The valve of claim 5, wherein the valve is configured to, At least one of the first externally-connected conductive member and the second externally-connected conductive member has an end wall surface and an outer peripheral wall surface; the conductive member has: The first conductive terminal is connected with the corresponding end wall surface of the external conductive piece; the two second conductive terminals are connected with the peripheral wall surfaces of the corresponding external conductive pieces; The first conductive terminal is positioned in the first sub-walking channel, the second conductive terminal is positioned in the second sub-walking channel, and the first conductive terminal is positioned in the second sub-walking channel.
  7. 7. The valve of claim 6, wherein the valve is configured to, The second conductive terminal is provided with a first conductive space penetrating along a first direction; and when the valve is positioned at the opening degree of the second valve, the corresponding external conductive piece stretches into the first conductive space to form surface contact with the first conductive terminal.
  8. 8. The valve of claim 7, wherein the valve is configured to, Along a projection plane perpendicular to the first direction, the projection of the first conductive terminal in the second sub-travel channel on the projection plane overlaps with the projection contour of the inner wall surface defining the first conductive space on the projection plane; And/or Along a projection plane perpendicular to the first direction, the projection of the part, extending into the first conductive space, of the first conductive terminal on the projection plane overlaps with the projection contour of the inner wall surface, defining the first sub-walking member channel, on the projection plane, of the insulating connecting member; And/or Along the projection plane perpendicular to the first direction, the projection of the second conductive terminal on the projection plane overlaps with the projection contour of the inner wall surface of the second sub-walking member channel defined by the insulating connecting member on the projection plane.
  9. 9. The valve of claim 7, wherein the valve is configured to, And under the condition that the valve is at the second valve opening, the outer wall surface of at least one of the first external conductive piece and the second external conductive piece is in surface contact with the inner wall surface of the second conductive terminal, which defines the first conductive space.
  10. 10. A valve as claimed in any one of claims 2 to 9, wherein, The valve further comprises: the valve seat is positioned at one side of the valve cover along the first direction; A fixed member configured to be fixedly disposed with respect to the valve seat; wherein the fixing member has a first accommodation space to accommodate a portion of the valve stem, the conductive member, and the insulating connecting member.
  11. 11. The valve of claim 10, wherein the valve is configured to allow the valve to be opened, The fixing piece is provided with a fixing channel penetrating along a first direction; Wherein, the part of the first external conductive element and the part of the second external conductive element respectively penetrate through the corresponding fixed channel to the outside of the first accommodating space; the other part of the first external conductive member and the other part of the second external conductive member are positioned in the first accommodating space.
  12. 12. The valve of claim 10, wherein the valve is configured to allow the valve to be opened, The valve further comprises: The reset piece is movably connected between the valve seat and the valve rod, and is sleeved on the valve rod; wherein the reset member is configured to apply a force to the valve stem such that the valve stem has a tendency to move away from the valve seat in a first direction.
  13. 13. The valve of claim 10, wherein the valve is configured to allow the valve to be opened, The valve further comprises: The protective cover is connected between the valve seat and the fixing piece and provided with a second accommodating space penetrating along the first direction; The first accommodating space is communicated with the second accommodating space, at least part of the valve rod is located in the second accommodating space, and part of the insulating connecting piece is located in the first accommodating space and part of the insulating connecting piece is located in the second accommodating space.
  14. 14. The valve of claim 13, wherein the valve is configured to allow the valve to be opened, The valve further comprises: A limiting part arranged on one of an inner wall surface defining the first accommodating space and an outer wall surface of the protective cover; A limit matching part arranged on the other one of the inner wall surface defining the first accommodating space and the outer wall surface of the protective cover; When the limiting part is combined with the limiting matching part, the fixing part is limited to rotate around the first direction relative to the protective cover.
  15. 15. The valve of claim 14, wherein the valve is configured to allow the valve to be opened, One of the limit part and the limit matching part is matched with a block structure, and the other is configured as a groove structure.
  16. 16. The valve of claim 13, wherein the valve is configured to allow the valve to be opened, Forming a first exhaust passage communicated with the outside between the valve seat and the valve cover under the condition that the valve is at a first valve opening; And/or The valve rod is provided with a second exhaust channel communicated with the outside, the valve cover is also provided with a third exhaust channel communicated with the second exhaust channel, the protective cover is provided with at least one first through hole, and the valve rod is provided with at least one second through hole communicated with the first through hole; The first through hole, the second exhaust passage and the third exhaust passage are sequentially communicated; And/or And a fourth exhaust passage communicated with the outside is formed between the valve seat and the valve cover under the condition that the valve is at the second valve opening.
  17. 17. The valve of claim 10, wherein the valve is configured to allow the valve to be opened, The valve further comprises: And the temperature detection part is arranged on the fixing part and is used for detecting temperature data of the valve.
  18. 18. An energy storage system comprising a valve according to any one of claims 1 to 17.
  19. 19. A powered device comprising a valve according to any one of claims 1 to 17, or an energy storage system according to claim 18.

Description

Valve, energy storage system and electric equipment Technical Field The application relates to the technical field of battery thermal management, in particular to a valve, an energy storage system and electric equipment. Background Thermal runaway is a serious safety failure of battery systems. When the heat of a certain battery is out of control, a large amount of high-temperature gas and heat can be instantaneously generated, so that the internal pressure and temperature of the energy storage system are rapidly increased. If the high temperature and flame cannot be effectively isolated, the adjacent cells can be triggered to generate a chain thermal runaway reaction, namely heat spreading, and finally the whole energy storage system can be triggered to fire and explode. A Battery Management System (BMS) MANAGEMENT SYSTEM, which is abbreviated as BMS throughout, can collect signals of voltage, temperature, pressure, etc. in real time when a vehicle is running (operating state) to determine whether thermal runaway occurs. However, when the vehicle is in a stopped state, the BMS may enter a sleep mode in order to save power. In the parking stall state, most of the sensing functions of the BMS are turned off. If the battery is thermally out of control at this time, the BMS cannot sense and wake up by itself, and thus cannot perform a corresponding malfunction operation. In the related art, the wake-up of the BMS depends on an electronic wake-up signal, and the reliability is low. Disclosure of Invention The embodiment of the application provides a valve, an energy storage system and electric equipment, so as to at least partially solve the technical problems. In order to achieve the above object, according to a first aspect of the present application, there is provided a valve connected between a slave module and a battery; the valve comprises a valve cover, a conductive piece and a conductive piece, wherein the valve cover is configured to enable the valve to have a first valve opening, the conductive piece is configured to form an insulating whole with the valve cover, and when the valve is located at the first valve opening, the conductive piece is located at a disconnection position under the action of the force provided by the valve cover, so that electric energy interaction between the slave control module and the battery is disconnected. By providing a valve between at least one slave module and a corresponding battery, the valve is configured to have a first valve opening. On the one hand, under the condition that the valve is at the first valve opening, the electric energy interaction between at least one slave control module and the corresponding battery is disconnected, so that the master control module can be awakened. On the other hand, through mechanical valve, control from the accuse module and the electric energy interaction between the battery that corresponds, need not to set up alone and discern the sensor of valve state and carry out the transmission of sensor signal, effectively reduced the structural complexity of storage system, avoid the mistake under the non-fault scene to wake up, further promoted the precision of thermal runaway trouble discernment, avoid the invalid early warning that single signal misjudgement leads to, perhaps can't smoothly transmit the condition of sensor signal. Optionally, the valve further comprises a valve rod, an insulating connecting piece and an insulating connecting piece, wherein the valve rod is positioned between the valve cover and the conductive piece, the insulating connecting piece is positioned between the valve rod and the conductive piece and is used for enabling the conductive piece to form insulating connection with the valve rod and the valve cover, and the valve rod and the insulating connecting piece are configured to synchronously move with the conductive piece along a first direction under the action of the action force provided by the valve cover. By adopting the technical scheme, on one hand, the arrangement of the insulating connecting piece realizes the electric insulation between the valve rod and the conductive piece, on the other hand, the mechanical connection between the valve rod and the conductive piece is also ensured, so that the insulating connection between the conductive piece and the valve cover is realized, the whole insulating connection can be formed, the probability of short circuit and false triggering is reduced, on the other hand, the valve cover, the valve rod, the conductive piece and the insulating connecting piece can form a whole, the modularization of the valve is realized, and the valve is convenient to disassemble and assemble. Optionally, the valve further comprises a first external conductive piece configured to electrically connect the slave control module with one of the batteries, a second external conductive piece configured to electrically connect the slave control module with the other of the batt