Abstract: The present invention provides a battery module, comprising a battery cell and a current collector sheet, the battery cell is provided with a positive electrode tab and a negative electrode tab, the positive electrode tab and the negative electrode tab are located at the opposite ends of the battery cell, the adjacent battery cells form a Z-type arrangement through the current collector sheet by putting the tabs in series, the said positive electrode tab of the battery cell is an aluminum foil tab or a copper foil tab, the negative electrode tab is a copper foil tab or an aluminum foil tab, and the material of the positive electrode tab and that of the negative electrode tab are not the same, the said current collector sheet is a combined current collector sheet, the current collector sheet is combined by an aluminum sheet and a copper sheet.

Abstract: The present invention relates to a battery pack system, comprising: a plurality of battery cells, sealing fluid and a battery pack case. The battery cells are immersed in the sealing fluid in the battery pack case, which includes a box and a top cover. The case is equipped with an inlet port and an outlet port. The outlet port is connected with the inlet port through a circulation pump and a buffer vessel, forming a circular route; some sensors are configured in the buffer vessel. When an electrolyte leakage occurs in the battery pack, it is confined in the sealing fluid, preventing the electrolyte to be exposed to air and further catch on fire. When the mixed fluid circulates through the buffer vessel, the sensors detect the leakage at once and send out warnings to the battery system to increase its safety level. The leaked flammable gases are separated from the circulation channel and get released to avoid too high internal pressure and consequently break the battery box.

Abstract: The present invention provides a battery module and a liquid-cooled battery system that uses it, a battery cell and a current collector sheet, on the premise that the materials like the electrode and separator and so on are completely the same, energy density of the battery pack is greatly increased; the cell and the current collector sheet are fully welded connections, the joints are fewer and it is not prone to produce desoldering, also ensuring the stability of the of the cell tab and high current carrying capacity, and when putting the parallel battery module in series, the use of wires are avoided, thus reduces the volume of the battery pack; the innovative design for the liquid-cooled battery pack system, improves the thermal balance between the cells, and the heat-dissipation in battery pack distributes more evenly, the insulation property of the battery package is highly improved, controlling the heat-dissipation capacity of the system by adjusting the flow rate of the circulating pump, not only the u

Abstract: A hybrid power supply includes a first battery array, a second battery array, and a controller. The first battery array includes a plurality of first battery packs. The second battery array includes a plurality of second battery packs. The controller controls charging and discharging of the first battery array and the second battery array. The second battery array is connected in parallel with the first battery array by at least a bidirectional converter. The first battery array and the second battery array are connected to a power bus for outputting power. The first battery array has a high-rate charging/discharging performance higher than the second battery array. The second battery array has a capacity greater than the first battery array.

Abstract: The present disclosure provides a catalyst for preparing lactic acid and derivatives thereof, comprising at least one of metallic compounds MXn, wherein M is selected from Na, K, Mg, Ca, Sr, Ba, Al, Ga, In, Sn, Sb, Bi, Cr, Mn, Fe, Co, Ni and Zn, and n is an integer of 1 to 6. The present disclosure further provides a method for synthesis of lactic acid and derivatives thereof, wherein at least one raw material including carbohydrates, at least one alcohol, at least one of the aforesaid catalysts and at least one solvent are heated to react to prepare lactic acid and derivatives thereof.

Abstract: A two-step pathway for preparing high pure quaternary phosphonium salts is disclosed. In the first step, hydrogen phosphide (PH3) or a higher phosphine reacts with a protonic compound to produce a phosphonium salt, which then reacts with a carbonic acid diester to produce a quaternary phosphonium salt in the second step. On one hand, hydrogen phosphide (PH3) and higher phosphines, including primary phosphines, secondary phosphines, and tertiary phosphines, after neutralization with protonic compound, become sufficiently reactive and can be alkylated by carbonic acid diester to form quaternary phosphonium cations. On the other hand, as an anion-exchange procedure is completely avoided, the process not only gives quaternary phosphonium salts of high purity, but also gives people freedom to design the cation and the anion of a quaternary phosphonium salt synchronously by choosing a preferred phosphine and a protonic compound that can supply a desired anion.

Abstract: The present invention provides a battery pack injected with phase change material, comprising a plurality of battery modules consisting of a plurality of stacked battery cells and a pack case housing the battery modules. The battery pack is hermetic, and injected with hydrofluoroether. The pressure in the pack case is between ?0.09 MPa and ?0.01 MPa.

Abstract: A battery pack and a liquid leakage detection method thereof are provided. The battery pack comprises a plurality of battery cells, a isolated liquid and a battery box containing the isolated liquid. The battery cells are soaked in the isolated liquid. The battery box comprising a box body and a cover plate. The isolated liquid is a fire-retardant and insulating liquid that has a specific gravity smaller than an electrolyte and is insoluble in the electrolyte. A collection portion is disposed at the bottom of the battery box, and a detection component is disposed in the collection portion. The present disclosure encloses the leaked electrolyte in the fire-retardant isolated liquid and uses the detection component to detect a resistance value of the isolated liquid so as to improve the safety of the box body.

Abstract: A lithium-ion battery comprises a positive electrode, a negative electrode, an electrolyte system and an ion-selective conducting layer disposed between the positive electrode and the negative electrode. The ion-selective conducting layer consists of high polymers and an inorganic lithium salt having lithium-ion conductivity, or consists of the inorganic lithium salt. The inorganic lithium salt includes LimMnOx, wherein the values of the m and n ensure the LimMnOx an electrically neutral compound, M is selected from at least one of B, P, Si, Se, Zr, W, Ti, Te, Ta, Al and As. The lithium-ion battery has a conduction layer having preference-selective conductivity for the lithium ions and disposed between the positive electrode and the negative electrode. The selective-conduction layer has improved mobility for lithium ions. Metal ions generated from the oxidized metal current collector at the negative electrode due to the over-charging of the battery can be blocked.

Abstract: A cathode material of a lithium ion secondary battery is provided, which includes a cathode active material and a glassy material coating on a surface of the cathode active material. The glassy material is capable of selectively allowing lithium ions to pass therethrough. The lithium ion secondary battery using the cathode material has the long cycle life and the high safety performance.

Abstract: A graphite negative material for a lithium-ion battery includes a number of graphite layers parallel to each other. A number of channels are through the graphite layers. And the channels are capable of allowing lithium ions to pass therethrough freely. A method for preparing the graphite negative material and a lithium-ion battery including the graphite negative material are also provided.

Abstract: The present disclosure provides a catalyst for preparing lactic acid and derivatives thereof, comprising at least one of metallic compounds MXn, wherein M is selected from Na, K, Mg, Ca, Sr, Ba, Al, Ga, In, Sn, Sb, Bi, Cr, Mn, Fe, Co, Ni and Zn, and n is an integer of 1 to 6. The present disclosure further provides a method for synthesis of lactic acid and derivatives thereof, wherein at least one raw material including carbohydrates, at least one alcohol, at least one of the aforesaid catalysts and at least one solvent are heated to react to prepare lactic acid and derivatives thereof.

Abstract: A battery pack system and a liquid leakage detection method thereof are provided. The battery pack system comprises battery cells, a isolated liquid and a battery box containing the isolated liquid. The battery cells are soaked in the isolated liquid. The battery box is formed with a isolated liquid outlet and a isolated liquid inlet. The outlet is connected together with the inlet via a circulation pump and a liquid separation device to form a circulation passage. When electrolyte leakage occurs to any of the battery cells, the electrolyte is separated into the liquid separation device and detected by a detection component. The present disclosure encloses the leaked electrolyte into the fire-retardant isolated liquid to prevent the electrolyte from contacting with the air so as to improve the safety of the battery box body.

Abstract: The present disclosure relates to a lithium-ion solid battery, and a synthesis method and a synthesis device thereof. The synthesis method comprises a synthesis step for a current collector, a synthesis step for a cathode, a synthesis step for a diaphragm and a synthesis step for an anodee, wherein at least one of the steps is accomplished through on-site spray synthesis, and the on-site spray synthesis comprises a process of spraying a molten lithium metal. In the aforesaid way, the manufacturing process flow of the lithium-ion solid battery can be simplified.

Abstract: A two-step pathway for preparing high pure quaternary phosphonium salts is disclosed. In the first step, hydrogen phosphide (PH3) or a higher phophine reacts with a protonic compound to produce a phosphonium salt, which then reacts with a carbonic acid diester to produce a quaternary phosphonium salt in the second step. On one hand, hydrogen phosphide (PH3) and higher phophines, including primary phosphines, secondary phosphines, and tertiary phosphines, after neutralization with protonic compound, become sufficiently reactive and can be alkylated by carbonic acid diester to form quaternary phosphonium cations. On the other hand, as an anion-exchange procedure is completely avoided, the process not only gives quaternary phosphonium salts of high purity, but also gives people freedom to design the cation and the anion of a quaternary phosphonium salt synchronously by choosing a preferred phosphine and a protonic compound that can supply a desired anion.

Abstract: A catalyst for synthesis of lactic acid and it derivatives is provided. The catalyst includes SnY2.mH2O and at least one of NH4X or quaternary ammonium salts, wherein X and Y are selected from F—, Cl—, Br—, I—, CH3SO3—, C6H5SO3—, CH3C6H4SO3— or CN—, m represents an integer of 1 to 15. A method for synthesis of lactic acid and it derivatives with the above catalyst is also provided. By using the above catalyst and method, it is capable of converting carbohydrate-containing raw material to lactic acid and its derivatives directly in a more efficient and economical way.

Abstract: The present disclosure discloses an organosilicon polymer, a solid electrolyte comprising the organosilicon polymer, and a corresponding solid-state lithium-ion battery. The organosilicon polymer of the present disclosure is a polymer compound comprising both an inorganic backbone-chain structure and an organic side-chain structure, and has the characteristics of both the organic polymer and the inorganic polymer as well as many unique properties. Therefore, the solid electrolyte formed by the organosilicon polymer and the solid-state lithium-ion battery thereof have many good characteristics including a good lithium-ion-conduction capability, better resistance to high temperatures, a wider range of operating temperatures, and better thermal stability.

Abstract: A method for preparing a negative electrode material of a lithium ion battery is provided. In the method, a solvent-thermal reaction of a graphite material and a modifier precursor in an organic solvent is conducted to form a reaction product. And then, the reaction product is dried. Next, a heat treatment is applied to the dried reaction product to obtain the negative electrode material. The negative electrode material prepared by the method has improved cycle stability and high current performance.

Abstract: The present disclosure discloses a silicon-sulfur polymer, a solid electrolyte comprising the silicon-sulfur polymer, and a corresponding solid-state lithium-ion battery. The silicon-sulfur polymer of the present disclosure is a polymer compound comprising both an inorganic backbone-chain structure and an organic side-chain structure, and has the characteristics of both the organic polymer and the inorganic polymer as well as many unique properties. Therefore, the solid electrolyte formed by the silicon-sulfur polymer and the solid-state lithium-ion battery thereof have many good characteristics including a good lithium-ion-conduction capability, better thermal endurance, a wider range of operating temperatures, and better thermostability.

Abstract: The present invention provides a battery pack injected with phase change material, comprising a plurality of battery modules consisting of a plurality of stacked battery cells and a pack case housing the battery modules. The battery pack is hermetic, and injected with hydrofluoroether. The pressure in the pack case is between ?0.09 MPa and ?0.01 MPa.