I don't know what you mean by "such battle accounts," since none have been mentioned in this thread.
Naval battles involving the Danish navy are described in English in R[oger] C[harles] Anderson, Naval Wars in the Baltic during the Sailing-Ship Epoch, 1522–1850
(London: G. Gilbert-Wood, 1910).
There is undoubtedly more detail in H[ans] G[eorg] Garde, Efterretninger om den danske og norske Søemagt
(4 vols.; Copenhagen: Privately published (J.D. Qvist, printer), 1832–35).
A recent history of the Danish navy is Hans Christian Bjerg, A History of the Royal Danish Navy, 1510–2010
(Copenhagen: Statens Forsvars Historiske Museum, 2010). Since this covers the same content as Garde, plus the period since 1832, in only one volume instead of four, it would undoubtedly be less detailed. You could look up Bjerg in WorldCat (https://www.worldcat.org/
) to see whether there is a Danish-language version.
There is undoubtedly specialist literature in Danish, including biographies of eminent admirals like Niels Juel.
Most Danish naval battles of the sail era were against the Swedes, so Swedish naval histories would have information about them, too:
C[arl] A[ugust B.] Gyllengranat, Sveriges sjökrigs-historia
(2 vols.; Carlskrona: Georg Ameen & Comp., 1840).
Otto Emil Lybeck, et al., eds., Svenska flottans historia: Örlogsflottan i ord och bild från dess grundläggning under Gustav Vasa fram till våra dagar
(4 vols.; Malmö: A.-B. Allhems förlag, 1942–49) is a massive work that covers ship design and building, administration, weapons, and much more, but does have chapters on naval operations and battles.
Gunnar Unger, Illustrerad svensk sjöhistoria
(2 vols.; Stockholm: Albert Bonniers Förlag, 1923) was originally written by a naval history professor at the Swedish naval academy for his students.
Biographies of Swedish admirals of the 17th century would also have to have information about the battles they fought against the Danish navy.