Applicant respectfully disagrees that the problem to solved by the present invention may therefore be regarded as using the shell (upper side) for injection molding instead of the cover plate (i.e. an alternative) for the reasons as stated below:Firstly, claim 1 recites "the capacitor core (4) is inserted into and integrally sleeved in the inner cavity (10) of the cover plate (3) such that a top end surface and a side surface of the capacitor core (4) are completely covered by the cover plate (3)", and "an outer side wall of the cover plate (3) fits an inner wall of the shell (1)", and "the cover plate (3) integrally sleeved with the capacitor core (4) is fixedly installed in the shell (1) for packaging such that a bottom end surface of the capacitor core (4) and the outer side wall of the cover plate (3) are completely covered by the shell (1); wherein the top end surface of the capacitor core (4) faces the upper end surface of the cover plate (3) and the bottom end surface of the capacitor core (4) faces a bottom surface of the shell (1)". However, as for D1, the covering member 30 (corresponding to the cover plate 3), without covering any end surface of the capacitor element 10 (corresponding to the capacitor core 4), only covers a part of the side surface of the capacitor element 10 close to the opening 26 of the case 20, , because the case 20 (corresponding to shell 1) plays a role of hiding the other part of the side surface of the capacitor element 10 and completely hiding both end surfaces of the capacitor element 10, as clearly shown in Fig. 2. And as a result, the end surfaces of the capacitor element 10 face the sides 22 and 24 of the case 20, respectively (see Figs. 1-2), which is different from the features recited in present claim 1.Secondly, claim 1 recites "the sealing body (2) is configured to be formed by injection molding on the upper end surface of the cover plate (3) and is configured to seal an opening of the shell (1) such that the sealing body (2) and the shell (1) are integrally packaged". Hence, the sealing body (2) would not contact any of the surfaces of the capacitor core (4) since the cover plate (3), due to its configuration, protects and fixes the capacitor core (4) well, in view of the above statements. Also, the sealing body (2) would not contact inner walls of the shell (1) and inner cavity of the cover plate (3) (see Fig. 1 of the present application). However, as for D1, resin J (corresponding to sealing body 2) is filled in the intervals 41 and 42, that is, a space between the capacitor element 10 and inner surface of the case 20 and a space between the capacitor element 10 and the covering member 30 (see Fig. 2 of D1). In other words, the resin J contacts the inner surfaces of the case 20 and the surfaces of the capacitor element 10 housed in the case 20, because the covering member 30 is not able to provide sufficient protection and fixing for the capacitor element 10.