Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 3 wt %?(X+Y)? about 11 wt %, about 0.5<(X/Y)?about 6, about 2 wt %<Y<about 5 wt %, and about 0.01<(Y/Z)?about 0.3; the trinitrile compound includes at least one selected from the group of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1, 1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 3 wt %<(X+Y)?about 11 wt %, about 0.1?(X/Y)?about 6, about 2 wt %<X?about 6 wt %, and about 0.01?(Y/Z)?about 0.3; the trinitrile compound includes at least one selected from the group of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 3 wt %?(X+Y)?about 11 wt %, about 1?(X/Y)?about 6, and about 0.01<(Y/Z)?about 0.3; the trinitrile compound includes at least one selected from the group of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %<(X+Y)?about 11 wt %, about 0.1?(X/Y)?about 4, about 30 wt %?Z?about 50 wt %, about 2 wt %<X?about 6 wt %, and about 0.01<(Y/Z)?about 0.3; wherein the trinitrile compound comprises at least one selected from the group consisting of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, 1 wt %<Y<5 wt %, about 30 wt %?Z?about 50 wt %, and about 0.02<(Y/Z)?about 0.3.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %?(X+Y)?about 11 wt %, about 1?(X/Y)?about 6, about 40 wt %?Z?about 50 wt %, and about 0.01<(Y/Z)?about 0.3; wherein the trinitrile compound comprises at least one selected from the group consisting of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: A battery including electrode plates and a housing accommodating the electrode plates. The electrode plates include a negative electrode plate located on an outermost layer. The negative electrode plate includes a first edge extending along a first direction and a second edge extending along a second direction, and the first direction is perpendicular to the second direction. The first edge is connected to the second edge by a third edge. The first edge intersects the third edge to form a first intersection point. The housing includes a first wall, a second wall, and a third wall that are connected to each other. The first wall is connected to the second wall by a first arc wall. The first wall is connected to the third wall by a second arc wall. The second wall is connected to the third wall by a third arc wall.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, about 30 wt %?Z?about 50 wt %, and about 0.01?(Y/Z)?about 0.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %<(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, about 2 wt %<X?about 6 wt %, about 30 wt %?Z?about 50 wt %, and about 0.01?(Y/Z)?about 0.

Abstract: A battery pack includes a battery, a first structural member, and a sampling assembly. The battery includes a battery shell and an electrode assembly arranged in the battery shell. The battery shell includes a bottom wall, a side wall and a top wall arranged in a first direction, and the side wall is connected to the bottom wall and the top wall. The first structural member covers at least part of the side wall. The first structural member has a first opening, and part of the surface of the side wall is exposed to the first opening. The sampling assembly includes a first sampling part, and the first sampling part is connected to a side wall through a first opening.

Abstract: A battery module includes a battery pack and a first conductive member. The first conductive member includes a first connecting part, a first functional part, and a second connecting part located at a side of the battery pack and connected in sequence, and the first connecting part is electrically connected to the battery pack. The first functional part includes a first part and a first protrusion. The first part connects the first connecting part and the second connecting part. The first protrusion extends from the first connecting part towards the second connecting part along a second direction. The first protrusion is apart from both the first part and the second connecting part, enabling the first functional part to be more easily blown.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %?(X+Y)? about 11 wt %, about 0.1? (X/Y)? about 4, about 30 wt %? Z? about 50 wt %, about 2 wt %<X? about 6 wt %, and about 0.01<(Y/Z)? about 0.3; wherein the trinitrile compound comprises at least one selected from the group consisting of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %<(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, about 2 wt %<X?about 6 wt %, about 30 wt %?Z?about 50 wt %, and about 0.01?(Y/Z)?about 0.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, about 30 wt %?Z?about 50 wt %, and about 0.01?(Y/Z)?about 0.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2 wt %?(X+Y)?about 11 wt %, about 1?(X/Y)?about 6, about 40 wt %?Z?about 50 wt %, and about 0.01<(Y/Z)?about 0.3; wherein the trinitrile compound comprises at least one selected from the group consisting of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, 1 wt %<Y<5 wt %, about 30 wt %?Z?about 50 wt %, and about 0.02<(Y/Z)?about 0.3.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 2.3, about 5 wt %?Z?about 50 wt %, 1 wt %<Y<5 wt %, and about 0.02?(Y/Z)?about 0.3; wherein the dinitrile compound is one or more compounds selected from butanedinitrile, adiponitrile, 1,4-dicyano-2-butene, and ethylene glycol bis(2-cyanoethyl) ether; and the trinitrile compound is one or more compounds selected from 1,3,6-hexanetricarbonitrile, 1,2,6-hexanetricarbonitrile and 1,2,3-tris(2-cyanoethoxy)propane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein, about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 2.3, about 5 wt %?Z?about 50 wt %, 1 wt %<Y<5 wt %, and about 0.02<(Y/Z)?about 0.3; wherein the trinitrile compound comprises at least one selected from the group consisting of 1,3,5-pentanetricarbonitrile; 1,2,3-propanetrinitrile, 1,3,6-hexanetricarbonitrile; 1,2,6-hexanetricarbonitrile, 1,2,3-tris(2-cyanoethoxy)propane; 1,2,4-tris(2-cyanoethoxy)butane, 1,1,1-tris(cyanoethoxymethylene)ethane, 1,1,1-tris(cyanoethoxymethylene)propane, 3-methyl-1,3,5-tris(cyanoethoxy)pentane, 1,2,7-tris(cyanoethoxy)heptane, 1,2,6-tris(cyanoethoxy)hexane, and 1,2,5-tris(cyanoethoxy)pentane.

Abstract: An electrolyte including a dinitrile compound, a trinitrile compound, and propyl propionate. Based on the total weight of the electrolyte, the weight percentage of the dinitrile compound is X, the weight percentage of the trinitrile compound is Y, and the weight percentage of the propyl propionate is Z, wherein about 2.2 wt %?(X+Y)?about 8 wt %, about 0.1?(X/Y)?about 6, 1 wt %?Y<5 wt %, about 5 wt %?Z?about 50 wt %, and about 0.02<(Y/Z)?about 0.3. The electrolyte further includes at least one selected from the group consisting of a cyclic carbonate ester having a carbon-carbon double bond, a fluorinated chain carbonate ester, a fluorinated cyclic carbonate ester, and a compound having a sulfur-oxygen double bond.

Abstract: An electrochemical apparatus includes a first battery cell, a second battery cell, and a first conductive member. The first battery cell includes a first conductive plate, the second battery cell includes a second conductive plate, and the first conductive plate and the second conductive plate are stacked on the first conductive member. A mutually connected portion of the first conductive plate and the second conductive plate includes a first region and a second region, the first conductive plate and the second conductive plate are welded to the first conductive member in the first region, the first conductive plate and the second conductive plate are connected in the second region through welding, and the second region is not connected to the first conductive member through welding.