Provided herein is a positive temperature coefficient film comprising an inorganic positive temperature coefficient compound Also provided herein are a positive temperature coefficient electrode, a positive temperature coefficient separator, and a positive temperature coefficient lithium secondary battery, each of which comprises the positive temperature coefficient film

Positive temperature coefficient film, positive temperature coefficient electrode, positive temperature coefficient separator, and battery comprising the same

A high energy density rechargeable (HEDR) battery employs a combined current limiter/current interrupter to prevent thermal runaway in the event of internal discharge or other disruption of the separator. The combined current limiter/current interrupter is interior to the battery.

Rechargeable battery with internal current limiter and interrupter

A method of manufacturing a battery module for use in a vehicle is presented. The method may include disposing battery cells into a lower housing and disposing a lid assembly over the battery cells. The lid assembly may include a lid and bus bar interconnects disposed on the lid. The method may also include disposing a printed circuit board (PCB) assembly onto the lid assembly and electrically coupling portions of the lid assembly, portions of the PCB assembly, and the battery cells to each other.

Layered battery module system and method of assembly

A high energy density rechargeable metal-ion battery includes an anode energy layer, a cathode energy layer, a separator for separating the anode and the cathode energy layers, an anode current collector for transferring electrons to and from the anode energy layer, the battery characterized by a maximum safe voltage for avoiding overcharge, and an interrupt layer that interrupts current within the battery upon exposure to voltage in excess of the maximum safe voltage. The interrupt layer is between the anode energy layer and current collector. When unactivated, it is laminated to the cathode current collector, conducting current therethrough. When activated, the interrupt layer delaminates from the anode current collector, interrupting current therethrough. The interrupt layer includes a voltage sensitive decomposable component that upon exposure to voltage in excess of the maximum safe voltage decomposes, evolving a gas, delaminating the interrupt layer from the anode current collector, interrupting current therethrough.

Rechargeable battery with voltage activated current interrupter

An improved high energy density rechargeable (HEDR) battery with an anode energy layer, a cathode energy layer, a separator between the anode and cathode energy layers for preventing internal discharge thereof, and at least one current collector for transferring electrons to and from either the anode or cathode energy layer, includes a resistive layer interposed between the separator and one of the current collectors for limiting the rate of internal discharge through the failed separator in the event of separator failure. The resistive layer has a fixed resistivity at temperatures between a preferred temperature range and an upper temperature safety limit for operating the battery. The resistive layer serves to avoid temperatures in excess of the upper temperature safety limit in the event of separator failure in the battery, and a fixed resistivity of the resistive layer is greater than the internal resistivity of either energy layer.

Rechargeable battery with resistive layer for enhanced safety

Provided are an electrode assembly for a secondary battery and a lithium secondary battery including the same. The electrode assembly for a secondary battery includes: a positive electrode having a positive electrode coating portion formed on a positive electrode collector; a negative electrode having a negative electrode coating portion formed on a negative electrode collector; and a polyolefin-based separator interposed between the positive and negative electrodes, wherein a PTC (Positive Temperature Coefficient) material layer is formed on the top face of any one of the positive and negative electrode coating portions. Therefore, the PTC material layer plays a role of enabling active material to exhibit constant conductivity regardless of charge or discharge while the batteries are normally operated, and the PTC material layer increases safety properties of the batteries by changing the active material from conductor to nonconductor when temperatures inside the batteries are increased by short circuit or accidents.

Electrode assembly for secondary battery and lithium secondary battery including the same

Provided is a lithium secondary battery, which includes a rechargeable electrode assembly sealed within an exterior member; and an electrode terminal (a positive terminal or a negative terminal) electrically connected to the electrode assembly, and partially protruded out of the exterior member. A portion of the electrode terminal exposed out of the exterior member is plated with a corrosion resistant metal. The electrode terminal is directly plated with a corrosion resistant metal such as cobalt, copper, nickel, and platinum to improve corrosion resistance thereof, thereby improving the performance of the lithium secondary battery.

Electrode terminal for secondary battery and lithium secondary battery including the same

PURPOSE: A cooling method and a cooling system of a lithium secondary battery are provided to prevent internal temperature increase of the secondary battery over a prescribed temperature due to abnormal heat generation of the secondary battery and to enhance thermal stability. CONSTITUTION: A cooling method of a lithium secondary battery which includes electrode terminals(11) comprises a step of cooling a battery cell by contacting refrigerant to connectors after fixing the conductive connectors(20) to the electrode terminals. A cooling system of the lithium secondary battery comprises conductive connections which are fixed to the electrode terminals and coolant tubes(30) which are connected to the connectors. Inside the coolant tubes, refrigerant is circulated . The connector comprises a body(21), a fixation part(23) which is formed in one side of the body and is connected and fixed in the electrode terminal, and a connect part(22) which is formed in other side of the body and is connected to a coolant pipe.

Cooling method and system of secondary battery module

Provided are a method and system for rapidly cooling a lithium secondary battery. A conductive connector is connected to at least one of positive and negative electrode terminals of a lithium secondary battery, and the conductive connector is brought into contact with a coolant to cool battery cells. The coolant may be water or air and may flow a coolant tube formed of a synthetic resin. An end of the coolant tube is fixed to at least one of the positive and negative electrode terminals. Therefore, owing to a cooling means disposed at a side of the lithium secondary battery, the temperature of the lithium secondary battery can be prevented from increasing to a preset value due to abnormal heating, and thermal stability of the lithium secondary battery can be improved by rapid cooling.

Method and system for cooling secondary battery

The present invention provides a method and system for cooling a lithium secondary battery which quickly cool the lithium secondary battery. Particularly, a conductive connection port is connected to at least one of the positive electrode terminal and the negative electrode terminal of the secondary battery. Also, a refrigerant contacts the connection port to cool the battery cells. Here, the refrigerant may be water or air, and a refrigerant tube may be formed of a synthetic resin. Also, the refrigerant tube has one end welded and fixed to the electrode terminals. According to the structure described above, a cooling unit may be disposed on one side of the secondary battery to prevent the internal temperature of the secondary battery from being increased to above a predetermined temperature when the internal temperature of the secondary battery is increased due to abnormal heat generation by the secondary battery. Furthermore, the cooling unit may quickly cool the secondary battery to improve thermal stability.

Method and system for cooling lithium secondary batteries

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