9 results about "Water-activated battery" patented technology

A high energy density lithium water-activated battery having a compact, readily manufacturable, and scalable electrode stack structure has enhanced tolerance to stress conditions such as shock and vibration, which may be experienced during shipping, transport and / or deployment into a waterbody (e.g., an ocean). A Li seawater battery pack can provide power to a marine device deployed in or on the surface of a waterbody via one or more seawater battery modules and a power circuit module having one or more input terminals for receiving battery voltages from the one or more battery modules. The power module conditions each of the battery voltages and consolidates these into a single operating output voltage, and the cathode electrodes from each of the battery modules share a common electrolyte comprising water from the waterbody.

The invention discloses a seawater activated battery monomer structure and a performance evaluation method. The seawater activated battery monomer structure comprises a current collecting column, a first sealing cover, a second sealing cover, a current collecting plate, a negative plate, an electrode frame, a copper net and a positive plate, a first through hole is formed in the middle of the electrode frame, and the edge of the negative plate is attached to the edge of the first through hole; a liquid inlet and a liquid outlet are correspondingly formed in the electrode frame; a plurality of turbulent flow columns are arranged on the negative plate; the electrode frame is provided with a first diversion trench and a second diversion trench; one end of the first diversion trench is communicated with a liquid inlet of the electrode frame, and the other end of the first diversion trench is communicated with the negative plate; one end of the second diversion trench is communicated with the liquid outlet of the electrode frame, and the other end of the second diversion trench is communicated with the negative plate. In the seawater activated battery, turbulent flow and vortex of seawater can be reduced, so that the phenomenon of non-uniform distribution of seawater between polar plates is reduced, and the utilization rate of positive and negative polar plates is further improved.

Systems and methods of the present disclosure include a vehicle water detection system that includes a housing configured to be disposed within a vehicle. The vehicle water detection system also includes a water-activated battery disposed within the housing and configured to produce an electrical voltage upon contact with water. The vehicle water detection system further includes an electronic circuitry disposed within the housing and configured to detect a water event occurring in the vehicle based at least in part on the electrical voltage.

The invention discloses a fast-activation silver chloride electrode and a preparation method thereof, and belongs to the technical field of electrochemical electrode materials, under the condition of red light, (1) welding a silver or copper guide lug on a silver foil or a copper foil substrate plated with a silver layer with enough thickness; (2) putting a silver foil with a guide lug or a copper foil plated with a silver layer with enough thickness into a positive electrode clamp, putting the positive electrode clamp into a formation tank, and respectively putting an auxiliary electrode into clamping grooves on two sides; (3) adding a formation solution to completely submerge the positive electrode clamp; (4) connecting the anode of a direct-current power supply with a guide lug, connecting the cathode with an auxiliary electrode wire, and performing electrochemical oxidation; (5) carrying out pre-discharge treatment on the prepared silver chloride electrode through an electronic load; and (6) washing the prepared silver chloride electrode with deionized water, drying or naturally airing, and storing in a dark place. The problem of voltage lag of the silver chloride electrode at the initial stage of discharge is solved, and the activation time of the water activated battery used as the ignition battery is remarkably shortened.

The present invention discloses a seawater-activated battery cell structure and a performance evaluation method. The seawater-activated battery cell structure includes a current collector post, a first sealing cover, a second sealing cover, a current collector plate, a negative electrode plate, an electrode frame, a copper mesh and a positive electrode plate; a first through hole is provided in the middle of the electrode frame, and the edge of the negative electrode plate is attached to the edge of the first through hole; a liquid inlet and a liquid outlet are correspondingly provided on the electrode frame; a plurality of flow disturbing posts are arranged on the negative electrode plate; a first flow guiding groove and a second flow guiding groove are provided on the electrode frame; one end of the first flow guiding groove is communicated with the liquid inlet of the electrode frame, and the other end is communicated with the negative electrode plate; one end of the second flow guiding groove is communicated with the liquid outlet of the electrode frame, and the other end is communicated with the negative electrode plate. In the seawater-activated battery of the present invention, the generation of seawater turbulence and eddy current can be reduced, so as to reduce the occurrence of uneven seawater distribution between the plates, and further improve the utilization rate of the positive and negative electrode plates.

The invention discloses a bipolar plate diversion trench of a seawater activated battery and a performance evaluation method. The seawater activated battery bipolar plate diversion trench comprises a seawater activated battery bipolar plate diversion trench main body, a turbulent flow channel, a first diversion trench and a second diversion trench, one end of the seawater activated battery bipolar plate diversion trench main body is provided with a liquid inlet, and the other end of the seawater activated battery bipolar plate diversion trench main body is provided with a liquid outlet; the turbulent flow channel is arranged on the bipolar plate diversion trench main body of the seawater activated battery, and a plurality of turbulent flow columns are arranged on the turbulent flow channel. The method has strong practical guiding significance on the design of the bipolar plate diversion trench of the seawater activated battery.

The invention relates to the technical field of seawater batteries, in particular to a cell structure for a rapid water-activated battery, which comprises: an electrode holder which is tubular, one end of the electrode holder is provided with an exhaust hole, and the other end of the electrode holder is provided with an auxiliary liquid inlet groove; the battery body is wound on the outer surface of the electrode holder, and an anode lead-out wire and a cathode lead-out wire of the battery body penetrate through the exhaust holes; and the positioning sheet is mounted on the electrode holder and is used for fixing the battery body on the electrode holder in the inner cavity of the shell of the water activated battery, so that the battery body is prevented from moving or being extruded in the inner cavity of the shell of the water activated battery. According to the scheme, the problems that in the activation process of a traditional seawater battery, an internal flow channel of the battery is unreasonable in design, when electrolyte (such as seawater) enters, air is compressed, the electrolyte is prevented from rapidly making contact with an electrode, and activation is slow are solved.

The present invention discloses a guide groove for a seawater-activated battery bipolar plate and a performance evaluation method. The guide groove for a seawater-activated battery bipolar plate comprises a guide groove body for a seawater-activated battery bipolar plate, a spoiler groove, a first guide groove and a second guide groove; a liquid inlet is provided at one end of the guide groove body for a seawater-activated battery bipolar plate, and a liquid outlet is provided at the other end of the guide groove body for a seawater-activated battery bipolar plate; the spoiler groove is provided on the guide groove body for a seawater-activated battery bipolar plate, and a plurality of spoiler columns are provided on the spoiler groove. The present invention has a strong practical guiding significance for the design of the guide groove for a seawater-activated battery bipolar plate.

This invention belongs to the field of new energy materials and battery technology, specifically relating to a multi-walled carbon nanotube (MWCNT) composite cuprous chloride cathode, its preparation method, and its application. The cathode comprises a polyvinylpyrrolidone (PVP) dispersant, an aqueous polyurethane binder, and an active component containing MWCNTs and cuprous chloride. The preparation method includes three steps: preparing an aqueous MWCNT slurry, formulating a composite conductive binder, and composite active material and electrode forming. The addition of MWCNTs constructs a highly efficient electron transport network in the CuCl matrix, significantly improving conductivity and stability, and effectively solving the problem of voltage drop and premature deactivation that occurs in the later stages of discharge in pure CuCl electrodes. At the same time, the open-circuit voltage drop of the MWCNT composite cuprous chloride cathode in a freshwater environment is slower, the dissolution and corrosion rates are significantly reduced, the corrosion resistance is significantly enhanced, and the residual ratio is much higher than that of pure CuCl electrodes, which can extend the overall service life of the water-activated battery constructed with it.